Cs100 lec 3 cont2 hardware input & output )
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The document discusses hardware components for input and output devices. It describes various input devices like keyboards, pointing devices, pen input, and data entry scanners. It also describes output devices like display screens, printers, and other multimedia outputs for sound, voice and video. Input devices translate user input into digital signals while output devices convert processed digital data into human readable formats.
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![Input Devices - Consist devices that translate data into a form the computer can process ,[object Object],[object Object],2 types 1. Traditional computer keyboard (104 - 105 keys) 2. Specialty keyboards and terminals (touch tone telephone keypads to keyboards featuring pictures of food for use in fast-food restaurants](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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Computer hardware refers to the physical components of a computer system. It includes both internal components like the motherboard, hard drive, and RAM, as well as external components like monitors, keyboards, mice, and printers. Computer hardware can be classified into four categories: input devices, processing devices, output devices, and memory/storage devices. Input devices like keyboards and mice allow a user to input information. Processing devices like the CPU and GPU process instructions. Output devices like monitors and printers display or print the processed information. Memory and storage devices like RAM, hard drives, and flash drives temporarily or permanently store files and data.
Pointing Devices
Pointing devices are hardware input tools used to control the cursor on a computer screen and include mice, trackballs, touchpads, and more. Mice are the most common pointing device and use movement of the device to move the on-screen cursor in the same direction. Other pointing devices include trackballs, which contain a ball that is rolled to move the cursor, and touchpads, which are flat surfaces that track finger movement to control the cursor. Pointing devices allow users to perform functions like selecting text, icons, and menus.
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Computer system hardware consists of input, processing, storage, and output components. Common input devices include keyboards, mice, and scanners which allow a user to enter data. Processing involves executing computer programs through processes. Data is stored using various storage devices like hard drives, CDs, DVDs, and flash drives. Output is presented to the user via monitors, printers, and speakers.
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Pointing devices are hardware input tools used to control the cursor on a computer screen and include mice, trackballs, touchpads, and more. Mice are the most common pointing device and use movement of the device to move the on-screen cursor in the same direction. Other pointing devices include trackballs, which contain a ball that is rolled to move the cursor, and touchpads, which are flat surfaces that track finger movement to control the cursor. Pointing devices allow users to perform functions like selecting text, icons, and menus.
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A peripheral device connects to and works with a computer. There are four main types of peripheral devices: input devices like keyboards and mice; output devices like monitors and printers; storage devices like hard drives; and communication devices like network cards. Common input devices include keyboards for text input and mice for pointing and selection. Output devices display or print data from the computer.
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2) Data is represented by characters like letters, numbers and symbols that can be interpreted by humans or computers. Information is organized data that has meaning.
3) Common computer input devices include keyboards, mice, scanners, and microphones. Output devices display or print the results of processing and include monitors, printers, and speakers.
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Computer – Hardware
Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.
Examples of Hardware are the following −
Input devices − keyboard, mouse, etc.
Output devices − printer, monitor, etc.
Secondary storage devices − Hard disk, CD, DVD, etc.
Internal components − RAM,CPU, motherboard, etc.
INPUT AND OUTPUT DEVICES OF COMPUTER Input Devices A device that can be used to insert data into a computer system is called as input device. It allows people to supply information to computers without any input devices, a computer would only be a display device and not allow users to interact with it, Examples of input devices include keyboards, mouse, scanners, digital cameras and Light pen, joysticks, Touch-screen, OMR, OBR,OCR. Keyboard Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions. Keyboard is of two sizes 84 keys or 101/102 keys, but now 104 keys or 108 keys keyboard is also available for Windows and Internet. Mouse Mouse is most popular Pointing device. It is a very famous cursor-control device. It is a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to CPU on pressing the buttons. Generally it has two buttons called left and right button and scroll bar is present at the mid. Mouse can be used to control the position of cursor on screen, but it cannot be used to enter text into the computer.
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The document discusses various types of output devices including display screens, printers, audio devices, and virtual reality devices. It provides details on CRT monitors, describing screen resolution, dot pitch, and refresh rate. It also covers LCD monitors, inkjet printers, laser printers, photo printers, thermal printers, plotters, and audio output devices such as speakers. Facsimile machines and data projectors are also mentioned as other examples of output hardware.
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This document provides information about computer parts and devices. It explains that computers are made up of 3 main parts: the processor, input devices, and output devices. The processor acts as the computer's brain and is usually contained in the central processing unit case. Input devices like keyboards and mice allow users to input information. Output devices such as monitors, speakers, and printers send information out from the computer.
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The document discusses the evolution of various input devices for computers, including punch cards, keyboards, mice, touchscreens, and gesture-based inputs. It covers early devices like the lightpen, as well as modern touch interfaces and considerations for touchscreen design like ensuring targets are large enough for finger input. Multi-touch interfaces are also discussed. The document aims to provide an overview of how input devices have changed as computers have become more ubiquitous.
Output Devices
The document discusses various types of computer peripheral output devices. It describes monitors, which display information on a screen for users to view. Printers are also discussed, including how they work and different printer technologies like inkjet and laser printers. The document mentions other output devices such as plotters, speakers, DVD/CD-ROM drives, and headsets.
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The document discusses several input and output devices for computers. It describes joysticks, which allow directional movement and button inputs for gaming. Scanners are used to digitize images and text, with flatbed scanners being the most common type. Printers provide hard copies of digital information at a speed measured in pages per minute. Speakers are used for sound output, with external speakers providing higher quality than internal computer speakers.
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The document discusses various computer input and output devices. It describes common input devices like keyboards, mice, microphones, digital cameras, and scanners that allow a user to enter data into a computer. It also outlines output devices such as monitors, speakers, and different types of printers that display information from the computer for the user.
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Input devices allow data and instructions to enter a computer system. Common input devices include keyboards, pointing devices like mice, and scanning devices. Keyboards allow text entry and come in various styles. Mice, touchscreens, and other pointing devices control the computer's cursor. Scanners digitize physical documents and images using light sensors. Character and mark recognition devices digitally read special text formats.
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Input devices such as keyboards and mice allow a user to enter data into a computer. Output devices like computer monitors, printers, and speakers allow the computer to display or communicate the processed data back to the user. Some common input devices are keyboards, pointing devices, touchscreens, scanners, and microphones. Common output devices include computer monitors, LCD projectors, smart boards, printers, and speakers. Monitors can be CRT, LCD, or LED while printers include inkjet, laser, and thermal printers.
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Input devices such as keyboards, mice, and scanners allow users to enter data into a computer. Output devices like monitors, printers, and speakers allow the computer to display or communicate processed information to users. Peripheral devices are optional hardware components that are not essential for basic computer functioning. Common input devices use keyboard entry or direct entry to transfer data, while output occurs via visual displays, audio, or physical printouts.
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This document discusses the key components of a computer system including input, output, processing, storage, and networking devices. It provides details on common computer hardware such as the monitor, motherboard, CPU, RAM, expansion cards, power supply, disk drives, and input devices. It also covers software types including operating systems and applications. Memory and storage measurements and technologies are defined. The roles of components like graphics cards, motherboards, CPUs and memory are explained. Output devices such as printers and speakers are also outlined. Networking methods for connecting computers are described.
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1) A computer accepts data as input, processes it according to programmed instructions, and produces output which it can store for future use.
2) Data is represented by characters like letters, numbers and symbols that can be interpreted by humans or computers. Information is organized data that has meaning.
3) Common computer input devices include keyboards, mice, scanners, and microphones. Output devices display or print the results of processing and include monitors, printers, and speakers.
INTRODUCTION TO HARDWARE
Computer – Hardware
Hardware represents the physical and tangible components of a computer, i.e. the components that can be seen and touched.
Examples of Hardware are the following −
Input devices − keyboard, mouse, etc.
Output devices − printer, monitor, etc.
Secondary storage devices − Hard disk, CD, DVD, etc.
Internal components − RAM,CPU, motherboard, etc.
INPUT AND OUTPUT DEVICES OF COMPUTER Input Devices A device that can be used to insert data into a computer system is called as input device. It allows people to supply information to computers without any input devices, a computer would only be a display device and not allow users to interact with it, Examples of input devices include keyboards, mouse, scanners, digital cameras and Light pen, joysticks, Touch-screen, OMR, OBR,OCR. Keyboard Most common and very popular input device is keyboard. The keyboard helps in inputting the data to the computer. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing some additional functions. Keyboard is of two sizes 84 keys or 101/102 keys, but now 104 keys or 108 keys keyboard is also available for Windows and Internet. Mouse Mouse is most popular Pointing device. It is a very famous cursor-control device. It is a small palm size box with a round ball at its base which senses the movement of mouse and sends corresponding signals to CPU on pressing the buttons. Generally it has two buttons called left and right button and scroll bar is present at the mid. Mouse can be used to control the position of cursor on screen, but it cannot be used to enter text into the computer.
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What is hardware, which input devices are most frequently used nowadays, why are some good to use, while others are outdated? This presentation is an answer to all this questions and it also has a small part about sensors (what are sensors and what types are there)
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The document provides an overview of computer hardware basics including input, output, and storage devices. It describes common input devices like keyboards and pointing devices. It discusses output to screens, printers, and other devices. It also covers various storage media including magnetic disks, tapes, and optical disks. The document emphasizes that computer systems integrate various input, output, and storage peripherals and that networks allow sharing of resources between multiple computers.
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The document discusses various types of output devices including display screens, printers, audio devices, and virtual reality devices. It provides details on CRT monitors, describing screen resolution, dot pitch, and refresh rate. It also covers LCD monitors, inkjet printers, laser printers, photo printers, thermal printers, plotters, and audio output devices such as speakers. Facsimile machines and data projectors are also mentioned as other examples of output hardware.
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The document discusses various types of output devices used by computers. It describes visual display units (VDUs or monitors), printers, plotters, and speakers. It provides details on different types of printers like dot matrix, inkjet, daisy wheel, and laser printers. It explains that output devices display, print, or transmit the results of processing from the computer's memory. Monitors can display graphics, text, and video, while printers provide hard copies in various speeds and qualities. Plotters are useful for engineering drawings and produce high quality outputs. Speakers convert electrical signals to sound.
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This document provides information about computer parts and devices. It explains that computers are made up of 3 main parts: the processor, input devices, and output devices. The processor acts as the computer's brain and is usually contained in the central processing unit case. Input devices like keyboards and mice allow users to input information. Output devices such as monitors, speakers, and printers send information out from the computer.
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The document discusses the evolution of various input devices for computers, including punch cards, keyboards, mice, touchscreens, and gesture-based inputs. It covers early devices like the lightpen, as well as modern touch interfaces and considerations for touchscreen design like ensuring targets are large enough for finger input. Multi-touch interfaces are also discussed. The document aims to provide an overview of how input devices have changed as computers have become more ubiquitous.
Output Devices
The document discusses various types of computer peripheral output devices. It describes monitors, which display information on a screen for users to view. Printers are also discussed, including how they work and different printer technologies like inkjet and laser printers. The document mentions other output devices such as plotters, speakers, DVD/CD-ROM drives, and headsets.
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The document discusses several input and output devices for computers. It describes joysticks, which allow directional movement and button inputs for gaming. Scanners are used to digitize images and text, with flatbed scanners being the most common type. Printers provide hard copies of digital information at a speed measured in pages per minute. Speakers are used for sound output, with external speakers providing higher quality than internal computer speakers.
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The document discusses various computer input and output devices. It describes common input devices like keyboards, mice, microphones, digital cameras, and scanners that allow a user to enter data into a computer. It also outlines output devices such as monitors, speakers, and different types of printers that display information from the computer for the user.
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Input devices allow data and instructions to enter a computer system. Common input devices include keyboards, pointing devices like mice, and scanning devices. Keyboards allow text entry and come in various styles. Mice, touchscreens, and other pointing devices control the computer's cursor. Scanners digitize physical documents and images using light sensors. Character and mark recognition devices digitally read special text formats.
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Input devices allow information to enter a computer and include bar code scanners, touch screens, joysticks, disk drives, scanners, microphones, drawing tablets, digital cameras, mice, keyboards, compact discs, and cameras. Common input devices are mice and keyboards which are used to navigate applications and enter text, while scanners and digital cameras are used to input images and photos into the computer.
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peripheral device, also known as peripheral, computer peripheral, input-output device, or input/output device, any of various devices (including sensors) used to enter information and instructions into a computer for storage or processing and to deliver the processed data to a human operator or, in some cases, a machine controlled by the computer. Such devices make up the peripheral equipment of modern digital computer systems.
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The document discusses various common computer input devices. It describes graphics tablets, webcams, electronic whiteboards, pen input, barcode readers, microphones, joysticks, mice, keyboards and scanners. It provides details on how each device works and what it is used for, such as capturing audio with microphones or reading barcodes with barcode readers. Graphics tablets, pen input, electronic whiteboards and mice are mentioned as devices that allow entering information into a computer using a stylus or by moving a cursor on a screen.
PST SC015 Chapter 2 Computer System (II) 2017/2018
The document discusses various computer input devices. It defines input devices as any hardware components that allow users to enter data and instructions into a computer. Examples of input devices mentioned include keyboards, pointing devices like mice and touchpads, scanners, microphones, webcams, touch screens, digital cameras, and various reading devices like optical character recognition. The functions and uses of these different input devices are described in detail.
Cs input and output devices
Introduction, Keyboard, Pointing Devices, Speech Recognition, Digital Camera, Scanners, Optical Scanners. Introduction, Classification of Output, Hard Copy Output Devices, Printers, Plotters, Computer Output Microfilm (COM), Soft Copy Output Devices, Monitors, Audio Output, Projectors, Terminals.
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Cs100 lec 3 cont2 hardware input & output )
- 3. TRADITIONAL KEYBOARD SPECIALTY KEYBOARD
- 4. Pointing devices Control the position of the cursor or pointer on the screen 1. mouse and its variants:
- 13. b. Bar-code reader
- 14. c. Mark-recognition and Character-recognition devices. c.1 Magnetic-ink character recognition (MICR)
- 15. c.2 Optical-mark recognition (OMR)
- 16. c.3 Optical-character recognition (OCR)
- 17. d. Fax machines d.1 Dedicated fax machines d.2 Fax modem
- 18. Source Data-Entry Devices 2. Webcam – a camera that attaches to a computer to record moving images that can then be posted on a website in real time
- 19. 3. Digital cameras – electronic camera that uses a light-sensitive processor chip to capture photographic images in digital form on a small diskette inserted in the camera or on flash-memory chip.
- 20. 4. Human biology-input devices . Characteristics and movements of the human body, when interpreted by sensors, optical scanners, voice recognition, and other technologies, can be form of input. a. Biometric system . b. Line of sight systems VOICE RECOGNITION FINGER SCANNER HAND SCANNER EYE SCANNER
- 25. b. Nonimpact Printers form characters and images without direct physical contact between the printing mechanism and paper. 3 Types b.1 Laser Printer
- 29. c. Plotters. 3 Types c.1 Pen
- 31. c.3 Large-format
- 32. d. Multifunction