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The document summarizes the key components and installation process of a CD drive. It describes the two main types of CD drives as CD and DVD drives. It outlines the main parts of a CD drive including the power supply, logical board, and head assembly. It provides a block diagram of the logical board and discusses laser gun assembly, jumper settings, and the front view. It also describes the file requirements and steps to install and configure the CD drive on a computer.
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CD DRIVE
This document discusses CDs and DVDs. It begins by outlining the history of CDs, which were developed in 1980 by Philips and Sony as a format for audio storage. CDs can hold up to 720MB of data. DVDs were developed later and can store much more data at 4.7GB. The document then describes different types of CD and DVD drives - CD-ROM drives can only read from CDs; CD-R drives can both read and write to recordable CDs; CD-RW drives can read, write, and rewrite to rewriteable CDs. Installing drives involves removing panels, connecting cables to the motherboard, and adding power. The document concludes with multiple choice questions to
Optical disc drive
An optical disc drive uses lasers to read and write data to optical discs such as CDs, DVDs, and Blu-ray discs. It contains lasers and lenses to guide the laser beam to the disc, and photodiodes to detect light reflections from the disc. ODDs can be internal, connected via IDE or SATA interfaces, or external, connected via USB or FireWire. Potential issues include the drive not being recognized, improper cabling, or laser/mechanical faults. Troubleshooting involves checking for physical damage, cleaning the lenses, ensuring proper BIOS detection, and replacing faulty components.
Cd rom
This document discusses Compact Disc Read Only Memory (CD-ROM). It provides details about:
1. CD-ROMs hold large amounts of data like text, graphics, and audio in a digital format on plastic discs. They can store up to 680 megabytes of data.
2. CD-ROMs use pits arranged in a spiral track to store data, read with a low-power laser. Unlike hard disks, CD-ROMs rotate at a constant linear velocity for reading.
3. CD-ROMs provide random access to data, allow quick retrieval of related items, and can maintain data integrity for over 100 years, making them a secure long-term storage medium.
cd-rom
CD-ROMs use laser optics to read digital data stored as tiny bumps and pits on polycarbonate discs. A CD-ROM drive focuses a low-power infrared laser on the disc to detect changes in reflectivity, interpreting the light intensity fluctuations to retrieve binary data encoded in the physical structure of the disc. CD-ROM drives connect to computers and can read discs at increasing speeds, typically rated from 1x to 24x the original music CD speed of 150 kilobytes per second.
CD-ROM, CD-R DVD, (By Shujaat Abbas)
This document discusses different types of storage devices. It begins by explaining that storage devices are used to store data even when a computer is turned off. It then provides details on various storage media like audio cassettes, video cassettes, VCRs, floppy disks, CDs, DVDs, and USB drives. For CDs and DVDs specifically, it describes their structure, read/write speeds, storage capacities, advantages like portability and large storage, and disadvantages like slow writing speeds. The document emphasizes that storage devices allow easy transfer of data and files between computers.
Cd Rom
CD-ROM is an optical disc used to store digital data originally developed for storing digital audio. It has a flat, round shape coated with a reflective material. Data is stored on CD-ROMs in the form of pits and lands, which are read by a laser focusing on the disc's spinning surface. CD-ROMs can store up to 650-700 MB of data and are read at varying speeds up to 52x, while writing is slower up to 32x. They use file systems like ISO 9660 to organize data on tracks and sectors. CD-ROMs provide large data storage in a compact, portable format but have slow writing speeds and data cannot be rewritten.
Dvd writer
A DVD writer is a device that records data onto DVD discs using laser technology. DVD writers can store much more data than CD writers, allowing users to back up large files and videos. DVD writers can be external, connected via USB or FireWire, or internal devices installed inside computers. They read and write standard DVD formats using lasers, spin the disc, and encode data in tracks through a burning process.
Optical storagе
The document defines optical storage and discusses optical disc drives. It explains that optical drives use lasers to read and write data to optical discs by detecting light reflections from bumps and areas on the disc's surface. The document outlines different types of optical media like CDs, DVDs, and Blu-rays, as well as read-only, rewritable, double-sided, and double-layer media. It also describes how optical drives spin and move discs to read data and how recorders encode data onto discs using lasers.
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This document discusses CDs and DVDs. It begins by outlining the history of CDs, which were developed in 1980 by Philips and Sony as a format for audio storage. CDs can hold up to 720MB of data. DVDs were developed later and can store much more data at 4.7GB. The document then describes different types of CD and DVD drives - CD-ROM drives can only read from CDs; CD-R drives can both read and write to recordable CDs; CD-RW drives can read, write, and rewrite to rewriteable CDs. Installing drives involves removing panels, connecting cables to the motherboard, and adding power. The document concludes with multiple choice questions to
Optical disc drive
An optical disc drive uses lasers to read and write data to optical discs such as CDs, DVDs, and Blu-ray discs. It contains lasers and lenses to guide the laser beam to the disc, and photodiodes to detect light reflections from the disc. ODDs can be internal, connected via IDE or SATA interfaces, or external, connected via USB or FireWire. Potential issues include the drive not being recognized, improper cabling, or laser/mechanical faults. Troubleshooting involves checking for physical damage, cleaning the lenses, ensuring proper BIOS detection, and replacing faulty components.
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This document discusses Compact Disc Read Only Memory (CD-ROM). It provides details about:
1. CD-ROMs hold large amounts of data like text, graphics, and audio in a digital format on plastic discs. They can store up to 680 megabytes of data.
2. CD-ROMs use pits arranged in a spiral track to store data, read with a low-power laser. Unlike hard disks, CD-ROMs rotate at a constant linear velocity for reading.
3. CD-ROMs provide random access to data, allow quick retrieval of related items, and can maintain data integrity for over 100 years, making them a secure long-term storage medium.
cd-rom
CD-ROMs use laser optics to read digital data stored as tiny bumps and pits on polycarbonate discs. A CD-ROM drive focuses a low-power infrared laser on the disc to detect changes in reflectivity, interpreting the light intensity fluctuations to retrieve binary data encoded in the physical structure of the disc. CD-ROM drives connect to computers and can read discs at increasing speeds, typically rated from 1x to 24x the original music CD speed of 150 kilobytes per second.
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This document discusses different types of storage devices. It begins by explaining that storage devices are used to store data even when a computer is turned off. It then provides details on various storage media like audio cassettes, video cassettes, VCRs, floppy disks, CDs, DVDs, and USB drives. For CDs and DVDs specifically, it describes their structure, read/write speeds, storage capacities, advantages like portability and large storage, and disadvantages like slow writing speeds. The document emphasizes that storage devices allow easy transfer of data and files between computers.
Cd Rom
CD-ROM is an optical disc used to store digital data originally developed for storing digital audio. It has a flat, round shape coated with a reflective material. Data is stored on CD-ROMs in the form of pits and lands, which are read by a laser focusing on the disc's spinning surface. CD-ROMs can store up to 650-700 MB of data and are read at varying speeds up to 52x, while writing is slower up to 32x. They use file systems like ISO 9660 to organize data on tracks and sectors. CD-ROMs provide large data storage in a compact, portable format but have slow writing speeds and data cannot be rewritten.
Dvd writer
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The document defines optical storage and discusses optical disc drives. It explains that optical drives use lasers to read and write data to optical discs by detecting light reflections from bumps and areas on the disc's surface. The document outlines different types of optical media like CDs, DVDs, and Blu-rays, as well as read-only, rewritable, double-sided, and double-layer media. It also describes how optical drives spin and move discs to read data and how recorders encode data onto discs using lasers.
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This document discusses CD audio and CD-ROM formats. CD audio uses the Red Book standard to store up to 74 minutes of audio using 8-to-14 modulation and error correction coding. CD-ROM uses Mode 1 and Mode 2 to store computer data or compressed audio/video up to 660MB or 742MB respectively. CD-ROM/XA builds on Mode 2 to concurrently retrieve compressed audio and video in Form 1 and Form 2 formats.
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The document discusses the history and standards of compact discs (CDs). It explains that CDs were originally developed in 1980 by Philips and Sony to store digital audio (the "Red Book" standard). Later extensions allowed CDs to also store computer data, video, and graphics. The document outlines several CD formats and standards over time such as CD-ROM, CD-R, CD-RW, and Video CD. It describes the physical details of CDs and how data is organized and read by lasers detecting pits and lands on the disc's surface. Standards are classified by "book colors" that define specifications for different disc systems.
Hard disk & Optical disk (college group project)
- Hard disk drives (HDDs) are devices used for digital data storage. They consist of rapidly rotating discs coated with magnetic material. Magnetic heads write data to and read data from the disc surfaces.
- HDDs were first introduced in 1956 and have since decreased dramatically in size and cost, becoming standard in personal computers by the late 1980s. Capacities have also increased greatly, with modern HDDs capable of storing terabytes of data.
- Optical discs like CDs and DVDs store data in the form of pits and lands on a reflective surface. They were invented in the late 1950s and early 1960s and are now commonly used to store music, video, and computer programs and data.
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Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
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Hard disks and optical disks are both used for data storage. Hard disks use spinning magnetic platters and read/write heads to store data non-volatilely even without power. Optical disks like CDs, DVDs, and Blu-Rays use lasers and reflective layers to store data in the form of pits and lands on polycarbonate disks. Optical disks allow for higher density storage than early hard disks and are portable, but have slower access speeds and more complex drive mechanisms.
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Presentation on storage device
This presentation discusses different types of storage devices. It begins by introducing storage capacity and properties of storage units like access time and cost. The main types covered are optical storage devices like CDs, DVDs, and Blu-Ray discs which can store large amounts of data but are fragile. Magnetic storage devices discussed are floppy disks with small capacity and hard disks which are the primary computer storage. Solid state flash memory and memory sticks are also covered as portable options.
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Primary & Secondary Storage Technologies
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Types of Storage Devices
Storage devices
This lesson includes the following sections:
Categorizing Storage Devices
Magnetic Storage Devices
Optical Storage Devices
Storage devices hold data, even when the computer is turned off.
The physical material that actually holds data is called a storage medium. The surface of a floppy disk is a storage medium.
The hardware that writes data to or reads data from a storage medium is called a storage device. A floppy disk drive is a storage device.
The two primary storage technologies are magnetic and optical.
Diskettes (floppy disks)
Hard disks
High-capacity floppy disks
Disk cartridges
Magnetic tape
Compact Disk Read-Only Memory (CD-ROM) A magnetic disk's medium contains iron particles, which can be polarized—given a magnetic charge—in one of two directions.
Each particle's direction represents a 1 (on) or 0 (off), representing each bit of data that the CPU can recognize.
A disk drive uses read/write heads containing electromagnets to create magnetic charges on the medium.
Digital Video Disk Read-Only Memory
(DVD-ROM)
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CD-Rewritable (CD-RW)
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DVD is a digital optical disc format that can store large amounts of data, such as full-length movies. DVDs use laser technology to store data in tiny pits and lands on the disc's surface. This allows DVDs to hold up to 17 gigabytes of data, far more than a compact disc. DVD technology has largely replaced videotapes and other older media for home video viewing and distribution.
Storing data
Hard disk drives (HDDs) and solid state drives (SSDs) are the primary types of data storage used today. HDDs store data magnetically on spinning disks, making them slower with moving parts but cheaper for high storage needs, while SSDs use non-volatile memory without moving parts for faster access times but at higher cost per gigabyte of storage. The first HDD invented in the 1950s weighed over a ton with only 5MB capacity, showing how far storage technology has advanced.
Cd Rom
A CD-ROM uses a laser to read encoded digital data represented by pits and lands on an optical disc. The data is read by detecting changes in light reflection patterns from a laser shining on the disc, where a pit or transition from pit to land represents a 1 and the time between is a 0. A CD-ROM can store around 600 MB of data through this binary encoding scheme addressed by minute, second and sector locations on the disc.
Secondary storage devices
Secondary storage devices are used to permanently store files and data when the computer is turned off. Common secondary storage devices include hard disk drives, CDs, DVDs, Blu-Ray discs, floppy disks, zip discs, pen drives, memory cards, and magnetic tapes. Hard disk drives are most often used due to their high storage capacities and fast access times, while tape drives can store large amounts of data compactly but have slower access speeds.
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This document discusses different types of storage devices including optical storage devices. It provides a brief history of optical storage including the introduction of CDs in 1983, DVDs in 1996, and Blu-Ray in 2002. It describes how optical storage works by making marks on an optically readable medium that can be read back with a laser, and how data is stored in pits and lands. The document also outlines other storage devices like hard drives, solid state drives, flash memory, and magnetic storage devices.
Hard disk drive
Hard disk drives (HDDs) are data storage devices that store and retrieve digital information using rapidly rotating disks coated with magnetic material. HDDs have greatly increased in capacity over time, from megabytes to terabytes, while decreasing dramatically in size and cost. Key components include disks, read/write heads, and an actuator arm that moves the heads over the disks. Error correction allows high recording densities without data loss. Future developments may allow even higher capacities through new magnetic recording technologies.
Secondarystoragedevice
Secondary storage devices are computer memory that is not directly accessible to the CPU and is used to store data that is not in active use. It has higher storage capacity than primary storage but is slower. Common secondary storage devices include hard disks, floppy disks, CDs, DVDs, USB flash drives, and memory cards. Secondary storage is non-volatile, meaning data remains even when the computer is turned off.
Optical Storage
Optical storage uses light to read data stored on optical discs or memory cards. Common optical storage devices include CDs, DVDs, Blu-Ray discs, HD DVDs, USB flash drives, memory cards, and smart cards. CDs hold around 800MB of read-only data, while DVDs and Blu-Ray discs can hold significantly more data up to 50GB in writable formats, using laser light of different wavelengths to read small pits in the disc's surface. Flash memory cards and drives store data electronically in non-volatile memory.
Cd rom semab javed
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Storage devices(present)
This document discusses various types of storage devices and storage media technologies. It covers magnetic storage devices like hard disks, optical storage like CDs and DVDs, solid state drives, removable storage media like USB flash drives, and various storage capacity units. Key points covered include the components and workings of hard disks, differences between internal and external hard disks, RAID configurations, characteristics of SSDs compared to hard disks, and overview of various memory card formats.
Lesson plan 1
This lesson plan aims to teach teachers about hardware and software tools. It includes objectives for teachers to differentiate hardware and software, classify examples, discuss their relationship, and recognize input/output devices. The instructional strategy uses direct instruction through a PowerPoint presentation defining hardware and software with examples. Teachers will complete assignments to research devices, describe scanner use, and use printers. Assessment includes a quiz, printing, and scanning exams. Materials include computers, projectors, and hardware devices.
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This document discusses CD audio and CD-ROM formats. CD audio uses the Red Book standard to store up to 74 minutes of audio using 8-to-14 modulation and error correction coding. CD-ROM uses Mode 1 and Mode 2 to store computer data or compressed audio/video up to 660MB or 742MB respectively. CD-ROM/XA builds on Mode 2 to concurrently retrieve compressed audio and video in Form 1 and Form 2 formats.
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The document discusses the history and standards of compact discs (CDs). It explains that CDs were originally developed in 1980 by Philips and Sony to store digital audio (the "Red Book" standard). Later extensions allowed CDs to also store computer data, video, and graphics. The document outlines several CD formats and standards over time such as CD-ROM, CD-R, CD-RW, and Video CD. It describes the physical details of CDs and how data is organized and read by lasers detecting pits and lands on the disc's surface. Standards are classified by "book colors" that define specifications for different disc systems.
Hard disk & Optical disk (college group project)
- Hard disk drives (HDDs) are devices used for digital data storage. They consist of rapidly rotating discs coated with magnetic material. Magnetic heads write data to and read data from the disc surfaces.
- HDDs were first introduced in 1956 and have since decreased dramatically in size and cost, becoming standard in personal computers by the late 1980s. Capacities have also increased greatly, with modern HDDs capable of storing terabytes of data.
- Optical discs like CDs and DVDs store data in the form of pits and lands on a reflective surface. They were invented in the late 1950s and early 1960s and are now commonly used to store music, video, and computer programs and data.
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Secondary storage devices are not directly accessible by the CPU and do not lose data when powered down. Common secondary storage devices include magnetic tapes for storing large amounts of data cheaply, hard disks for quick access to large amounts of gigabytes of storage, floppy disks for smaller storage and transport of documents between computers, and optical disks like CDs and DVDs which use lasers to store and access digital data for music, video, programs and more. DVDs specifically store over six times more data than CDs using the same physical dimensions through optical disc storage technology developed in 1995.
Hard disk and optical disk
Hard disks and optical disks are both used for data storage. Hard disks use spinning magnetic platters and read/write heads to store data non-volatilely even without power. Optical disks like CDs, DVDs, and Blu-Rays use lasers and reflective layers to store data in the form of pits and lands on polycarbonate disks. Optical disks allow for higher density storage than early hard disks and are portable, but have slower access speeds and more complex drive mechanisms.
Cloud Storage and Optical Disks
Cloud storage allows users to store files on remote servers accessed via the internet. It offers benefits like accessing files from any device with internet, sharing files easily, offsite backups, and relieving enterprises of data storage tasks. Optical disks like CDs and DVDs store data locally as microscopic pits and lands read by lasers. Common optical disk formats include CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-R, DVD-RW and Blu-ray disks, which have higher storage capacities than DVDs. Optical disks allow both read-only and rewritable options while cloud storage depends on subscription plans that may charge monthly fees.
Presentation on storage device
This presentation discusses different types of storage devices. It begins by introducing storage capacity and properties of storage units like access time and cost. The main types covered are optical storage devices like CDs, DVDs, and Blu-Ray discs which can store large amounts of data but are fragile. Magnetic storage devices discussed are floppy disks with small capacity and hard disks which are the primary computer storage. Solid state flash memory and memory sticks are also covered as portable options.
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This document discusses various types of external storage devices, including hard disk drives, solid state drives, flash memory, optical discs, and future technologies. It provides details on how hard disk drives use spinning disks and magnetic heads to read and write data. Solid state drives have no moving parts and use integrated circuits for memory. USB flash drives are small, removable flash memory devices. Optical discs like CDs and DVDs store data in spiral tracks of tiny bumps burned by a laser onto the disc's surface. Future storage technologies may use helium instead of air in hard drives for higher capacity and kinetic drives that interface over ethernet.
Primary & Secondary Storage Technologies
Primary storage components like RAM directly interface with the CPU, while secondary storage like RAID and SAN provide additional data storage. RAID arrays use multiple physical hard drives that appear as a single logical drive, allowing for redundancy in case of drive failure. Common RAID types include RAID 0 for disk striping without redundancy, RAID 1 for disk mirroring, and RAID 5 which uses striping with parity for redundancy across drives. Similarly, SAN provides primary storage through a dedicated network of storage devices that can be accessed across an infrastructure.
Types of Storage Devices
Storage devices
This lesson includes the following sections:
Categorizing Storage Devices
Magnetic Storage Devices
Optical Storage Devices
Storage devices hold data, even when the computer is turned off.
The physical material that actually holds data is called a storage medium. The surface of a floppy disk is a storage medium.
The hardware that writes data to or reads data from a storage medium is called a storage device. A floppy disk drive is a storage device.
The two primary storage technologies are magnetic and optical.
Diskettes (floppy disks)
Hard disks
High-capacity floppy disks
Disk cartridges
Magnetic tape
Compact Disk Read-Only Memory (CD-ROM) A magnetic disk's medium contains iron particles, which can be polarized—given a magnetic charge—in one of two directions.
Each particle's direction represents a 1 (on) or 0 (off), representing each bit of data that the CPU can recognize.
A disk drive uses read/write heads containing electromagnets to create magnetic charges on the medium.
Digital Video Disk Read-Only Memory
(DVD-ROM)
CD-Recordable (CD-R)
CD-Rewritable (CD-RW)
PhotoCD
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DVD is a digital optical disc format that can store large amounts of data, such as full-length movies. DVDs use laser technology to store data in tiny pits and lands on the disc's surface. This allows DVDs to hold up to 17 gigabytes of data, far more than a compact disc. DVD technology has largely replaced videotapes and other older media for home video viewing and distribution.
Storing data
Hard disk drives (HDDs) and solid state drives (SSDs) are the primary types of data storage used today. HDDs store data magnetically on spinning disks, making them slower with moving parts but cheaper for high storage needs, while SSDs use non-volatile memory without moving parts for faster access times but at higher cost per gigabyte of storage. The first HDD invented in the 1950s weighed over a ton with only 5MB capacity, showing how far storage technology has advanced.
Cd Rom
A CD-ROM uses a laser to read encoded digital data represented by pits and lands on an optical disc. The data is read by detecting changes in light reflection patterns from a laser shining on the disc, where a pit or transition from pit to land represents a 1 and the time between is a 0. A CD-ROM can store around 600 MB of data through this binary encoding scheme addressed by minute, second and sector locations on the disc.
Secondary storage devices
Secondary storage devices are used to permanently store files and data when the computer is turned off. Common secondary storage devices include hard disk drives, CDs, DVDs, Blu-Ray discs, floppy disks, zip discs, pen drives, memory cards, and magnetic tapes. Hard disk drives are most often used due to their high storage capacities and fast access times, while tape drives can store large amounts of data compactly but have slower access speeds.
Storage device
This document discusses different types of storage devices including optical storage devices. It provides a brief history of optical storage including the introduction of CDs in 1983, DVDs in 1996, and Blu-Ray in 2002. It describes how optical storage works by making marks on an optically readable medium that can be read back with a laser, and how data is stored in pits and lands. The document also outlines other storage devices like hard drives, solid state drives, flash memory, and magnetic storage devices.
Hard disk drive
Hard disk drives (HDDs) are data storage devices that store and retrieve digital information using rapidly rotating disks coated with magnetic material. HDDs have greatly increased in capacity over time, from megabytes to terabytes, while decreasing dramatically in size and cost. Key components include disks, read/write heads, and an actuator arm that moves the heads over the disks. Error correction allows high recording densities without data loss. Future developments may allow even higher capacities through new magnetic recording technologies.
Secondarystoragedevice
Secondary storage devices are computer memory that is not directly accessible to the CPU and is used to store data that is not in active use. It has higher storage capacity than primary storage but is slower. Common secondary storage devices include hard disks, floppy disks, CDs, DVDs, USB flash drives, and memory cards. Secondary storage is non-volatile, meaning data remains even when the computer is turned off.
Optical Storage
Optical storage uses light to read data stored on optical discs or memory cards. Common optical storage devices include CDs, DVDs, Blu-Ray discs, HD DVDs, USB flash drives, memory cards, and smart cards. CDs hold around 800MB of read-only data, while DVDs and Blu-Ray discs can hold significantly more data up to 50GB in writable formats, using laser light of different wavelengths to read small pits in the disc's surface. Flash memory cards and drives store data electronically in non-volatile memory.
Cd rom semab javed
CD-ROM is an optical disc that stores digital data. It uses pits and lands on its surface to store binary data as either ones or zeros that is read by a laser. A CD-ROM drive reads this data by focusing a laser on the spinning disc. While CD-ROMs can only read data and not write it, specialized drives can burn new CDs by using laser to heat and mark the disc's surface. CD-ROMs provide a portable way to store large amounts of data that can be read on different computers.
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This document discusses various types of storage devices and storage media technologies. It covers magnetic storage devices like hard disks, optical storage like CDs and DVDs, solid state drives, removable storage media like USB flash drives, and various storage capacity units. Key points covered include the components and workings of hard disks, differences between internal and external hard disks, RAID configurations, characteristics of SSDs compared to hard disks, and overview of various memory card formats.
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This lesson plan aims to teach teachers about hardware and software tools. It includes objectives for teachers to differentiate hardware and software, classify examples, discuss their relationship, and recognize input/output devices. The instructional strategy uses direct instruction through a PowerPoint presentation defining hardware and software with examples. Teachers will complete assignments to research devices, describe scanner use, and use printers. Assessment includes a quiz, printing, and scanning exams. Materials include computers, projectors, and hardware devices.
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Lesson plan frst year computer
This document contains a lesson plan for a Computer Science class at Government Girls College. The lesson plan spans several weeks and covers topics such as an introduction to computers, early computers, modern computers, computer operations, classifications of computers, hardware, software, memory, and storage. Each class meets on a specified day of the week in the computer lab and focuses on 1-2 topics, with details on the material to be covered and any exercises or tests.
CCTV Surveillance
This presentation discusses CCTV (closed-circuit television) surveillance systems. It describes the types of CCTV cameras, benefits of CCTV like monitoring and safety, and deployment scenarios. It also discusses myths versus realities of CCTV systems and the need for compatible accessories, servers, storage, backups and networks. The presentation provides a case study of a typical CCTV deployment and discusses value additions by the company Prime Infoserv like their solution-centric approach and domain expertise in security implementation.
Scanning powerpoint
The document discusses scanning as a fast reading technique where the reader moves their eyes quickly over a text to find specific information without reading every word. It recommends scanning exercises to help readers recognize words and move their eyes across a page more quickly. Mastering scanning can aid in finding information faster and improve reading comprehension.
Case study： Presentation Slides
Building services play a crucial role in buildings by designing, operating, and monitoring mechanical, electrical, and public health systems to ensure safety, comfort, and environmentally friendly operation. The case study examines the building services at The Summit shopping complex in Subang Jaya, identifying issues like poor maintenance, lighting, and safety systems that have led to a decline in visitors. Recommendations are provided to improve fire protection equipment and the vertical transportation systems to help attract more shoppers.
android architecture
This document summarizes key aspects of the Android operating system. It discusses what Android is, its architecture, versions, advantages and disadvantages compared to iOS. The architecture section explains that Android is based on the Linux kernel and uses various open source libraries and frameworks. It also summarizes the main applications building blocks in Android like activities, intents, services and content providers. The document concludes by comparing some differences between Android and iOS like open source vs proprietary, supported features and customization options.
Optical drive
An optical disc drive uses laser light to read and write data to optical discs. It contains a rotational mechanism that varies the disc's speed between 200-500 RPM depending on the disc's location. Optical drives also use either a tray-loading or slot-loading mechanism to insert discs. The laser is used to melt areas of the disc's recording layer, altering its crystalline structure to write data bits. The optic contains the laser, lens to guide the beam, and photodiodes to detect the reflected light and read the data.
Working of scanner
The document discusses the basic principles and components of scanners. It explains that scanners analyze images and process them to allow saving information to computer files. The key components of flatbed scanners are described as the CCD array, mirrors, scan head, glass plate, lamp, lens, cover, filters, stepper motor, and more. It then outlines the basic working of flatbed scanners which involves illuminating documents with a lamp, using mirrors and lenses to focus the image onto a CCD array, and transferring the digital image via interfaces like parallel, SCSI, or USB ports.
Vending Machine Presentation
SMC Enterprises deals in tea and coffee vending machines and consumables. They offer various models of vending machines from brands like Vitesse, Godrej, and Georgia. The machines have features like compact design, easy operation, and automatic cleaning. SMC also supplies coffee beans, ground coffee, tea leaves, and other consumables. They aim to provide high quality products and services with a focus on customer satisfaction.
Scanner presentation
The document discusses different types of scanners and how they work. It describes flatbed scanners, portable scanners, and sheetfed scanners. It also covers optical scanners, bar code readers, MICR, OCR, and OMR. Uses of scanners include copying documents, transmitting faxes, including images in documents, and analyzing text and images through character recognition.
Vending machine
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Scanner
1. The document discusses different types of scanners, including flatbed scanners, slide scanners, and handheld scanners.
2. Flatbed scanners work by placing an image face down on a glass pane, which is then scanned by a sensor and light source moving across the glass. Slide scanners illuminate slides and project the image onto a digital sensor. Handheld scanners are manually dragged across surfaces.
3. Scanners can scan images or documents and convert them to digital formats that can be inserted into documents, presentations, or emailed. Scanners can also scan directly to image or PDF file formats.
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The document discusses different types of optical discs such as CDs, DVDs, and Blu-Rays. It describes their key specifications including capacity, primary uses, and comparisons of formats. It also covers the technical aspects of how these discs work by using microscopic pits to store data as binary bits, as well as how discs are burned or commercially produced.
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The document provides information about the various components that make up a computer system. It discusses the hardware components including the monitor, modem, system unit, mouse, speakers, printer, keyboard and motherboard. It also describes the software that controls the computer including operating systems and application software. Finally, it outlines the main parts that comprise the system unit such as the central processing unit, power supply, fan, heat sink, video card and hard drive.
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This document summarizes the steps taken to copy a CD to an image file and then burn that image file to a new CD. It analyzed the original CD, copied the audio tracks and data to an image file, and prepared the burner and blank disc to write the image in disc-at-once mode. However, the process was aborted by the user before the image could be burned to the new disc.
Informáticam
Hard disks are circular magnetic storage devices that store information. They typically spin at 3,600 RPM and have read/write heads that move within 10-25 millionths of an inch across the disk surface. IDE and SATA are common interfaces that connect hard disks to computers. IDE supports up to four devices across two channels while SATA provides faster speeds and hot-swapping. SCSI interfaces provide more consistent transfer speeds independent of the CPU compared to IDE, making them suitable for multimedia or CAD work. Optical disks like CDs and DVDs store information using lasers to read information encoded in pits on the disk surface. Rewritable disks like CD-RWs and DVD-RWs allow erasing and rewriting
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The document is a log from a Nero burning session that was aborted by the user. It summarizes the steps taken to create an image file from an audio CD, and was in the process of burning that image to a disc when it was canceled. The software analyzed the source disc, configured burn settings for disc-at-once mode, cached the disc contents to an image file, and was preparing to start the burn when the user aborted it after being prompted to insert a blank disc.
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DVDs can store data digitally in various construction formats depending on whether they are single-sided or double-sided, and single-layered or dual-layered. DVD drives read and write data to DVDs using laser optics and contain parts like motors, lenses, and tracking mechanisms. DVD drive speeds are indicated in standards and proper installation and configuration is important for operation. Combo drives can read DVDs and write to CDs, while other storage devices include tape drives, pen drives, and zip disks. Troubleshooting is necessary to fix potential DVD drive issues related to power or other computer problems.
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This chapter discusses various storage devices and media. It describes the characteristics of magnetic disks like hard disks, floppy disks, and disk caching. Optical discs such as CDs, DVDs, and Blu-ray discs are also covered. Other storage media include tape, flash memory cards, USB flash drives, PC cards, and microfilm/microfiche. The chapter compares storage capacities and access times and recommends storage configurations for different users.
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This chapter discusses advanced disk drive technologies such as CD-ROM, DVD, and Blu-ray discs. It describes how these optical disc formats work, their storage capacities and advantages over floppy disks. The document explains CD-ROM and DVD drive components, how data is stored in bumps and pits, and various disc formats. It also provides steps to connect a disc drive to a computer and overview software to burn data or music discs.
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The document discusses the parts of a computer system unit and motherboard. It identifies various components of the system unit including the power supply unit, hard disk drive, optical disk drive, RAM, CPU, expansion cards, and video card. It also discusses component connection ports. The document then identifies parts of the motherboard such as sockets for processors, RAM slots, and expansion ports on the back panel. Learners are assigned tasks to identify and label components of the system unit and motherboard.
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More and more poorly designed devices are connected to Internet, often without basic security options such as changing password, or firmware updates [sic!]. Many of them are based on well-known SoC, such as Atheros AR9331, Ralink RT5350, or other popular chipsets. Have you ever wondered how to regain control over hardware *you* own? Prepare soldering iron and serial console and learn how to physically hack into embedded device. Tamper with bootloader to modify system. Extract and analyze firmware on various architectures. Eventually, flash device with customized OpenWrt build and modify hardware (eg. add sensors, buttons, LCD screen or USB port).
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This document provides system information for a Windows 7 desktop computer, including operating system details, hardware specifications, installed software, and a list of running processes. The computer has an AMD A8-5600K CPU, 8GB of RAM, and runs multiple instances of the Torch application for machine learning. Currently 23 processes are running, with torch.exe, svchost.exe, and explorer.exe using the most memory.
Log
This summary provides the key details from the log in 3 sentences:
The log documents the process of copying an audio CD to an image file and then burning that image to a disc. It records the creation of the image file and preparation for burning. However, the burning process was aborted by the user as no disc was present in the drive.
Log
This document contains log information from an attempt to burn an audio CD using Nero software. It lists the audio tracks to be burned totaling 79 minutes and 8 seconds. It then shows the burning process start but get aborted by the user. It identifies the recorder as a TSSTcorp CDDVDW drive and shows it failed to read the CD type. The logs show the software closing out the burning process since it was aborted.
Chapter07
The document discusses various types of storage devices and media. It describes the characteristics of magnetic disks like hard disks, including their components, tracks, sectors, cylinders, and head crashes. It also describes optical discs like CDs, DVDs, their read/write processes and various types. Tape storage is also covered. External hard disks, flash drives and other portable storage media are discussed.
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This document summarizes Linux device management and hardware management in Linux. It discusses how Linux devices are represented by files with major and minor numbers, and classified as block or character devices. It describes how device files are created and stored in the /dev directory. It also summarizes the roles of the kernel, udev, and sysfs in managing devices and loading drivers.
Dx diag
This system report summarizes the hardware and software configuration of a Windows XP system. Key details include an Intel Celeron CPU 430 running at 1.8GHz with 2GB of RAM. The generic video driver is noted as needing an update. No sound card was detected. Various devices are listed such as USB and PS/2 ports. The system is using a Spanish language and regional settings.
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This document summarizes the log of a burning process using Nero software. It records information about the software version, computer system details, drive details, ISO compilation settings, and steps taken during the burning process. The burning was aborted by the user when an non-empty disc was detected in the drive instead of a blank disc.
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Display Adapter, VGA Card, Graphic Card, Video Card, GPU
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Computer, Hardware, පරිගණක, දෘඩාංග, Information Technology, තොරතුරු තාක්ෂණය
:)
Guía de Soporte Técnico 3° semana 7.pptx
The document defines and describes the case or chassis of a computer. It has three main points:
1) The case houses and protects the internal computer components like the motherboard, CPU, memory, and protects them from dust, moisture and physical damage. It also provides power to the components through the power supply.
2) The front of the case contains ports and buttons like power buttons, LED indicators, memory card readers and drive bays for optical drives.
3) The rear includes a power supply, ventilation grates, ports for connectivity like USB, video and audio ports and expansion slots. It provides structure and connections for the internal components to function.
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Cd drive slide
- 1. CD DRIVE
- 2. CD DRIVE There are 2 type in CD DRIVE Technology. They are CD and DVD. 1. CD Reader and CD Re-Writer drive. 2. DVD Reader and DVD Re-Writer drive. DVD – Digital Versatile Disk. 3. Blu-ray Disc CD’s are classified in to 2 types, they are Once writtable CD. Re-Writtable CD.
- 3. MAIN PARTS OF CDDRIVE: 1. Power Supply. 2. Logical Board. 3. Head Assembly. 1. Power supply: It’s a 4 pin connector. +5V and +12 V. +5V for Logical Board and Head Stepper motor. +12 V Disk Rotation motor and Tray Movement Servo motor.
- 4. BLOCK DIAGRAM OF LOGICAL BOARD BUFFER (128 KB) CONTROLLER CD
- 6. JUMPER SETINGS ANALOG / DIGITAL AUDIO ( Track) 40 PIN DATA CABLE
- 7. FRONT VIEW OF CDDRIVE
- 9. CD DVD
- 10. CONFIGURATION OF CD DRIVE File Requirments: 1. AOATAPI.SYS 2. MSCDEX.EXE AOATAPI.SYS: It’s having the CD drive driver files.. MSCDEX.EXE: It assigns the drive letter to the CD drive.
- 11. CD DRIVE INSTALLATION: C:> COPY CON CONFIG.SYS DEVICE=C:AOATAPI.SYS /D:IDECD000 LASTDRIVE=Z ^Z C:>COPY CON AUTOEXEC.BAT C:MSCDEX.EXE /D:IDECD000 ^Z After Creating This File Restart Ur Computer
- 12. CD Demo 1 CD Demo 2 CD Demo 3
- 13. Resource Person Mobile: 98948-30731