Storage Device - AMAN ..
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Storage Device - AMAN ..

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Storage Device - AMAN .. Storage Device - AMAN .. Presentation Transcript

  • Note:- Don’t get Bored
  • AMANMOHAMMAD ATIF
  • STORAGE DEVICE
  • 1. Introduction2. Types of Storage Device3. Primary Storage Device4. Types of Primary Storage Device5. Secondary Storage Device6. Types of Secondary Storage Device
  • 1. Hardware device2. Holds information or store data3. Process data or information
  • There are mainly two types :-1. Primary Storage Device2. Secondary Storage Device
  • 1. Temporary Storage Device,2. Volatile in most cases,3. Looses data when power is shut off…
  • There are mainly three types :-1. RAM2. ROM3. CACHE MEMORY..
  • 1. Random Access Memory2. An integrated circuit made up of millions of transistor and capacitor.3. Volatile4. Two type - Static RAM [SRAM] Dynamic RAM [DRAM]
  • DRAM1. Volatile memory2. it requires stored information refreshed.. SRAM1. Volatile memory2. it never require refresh.
  • 1. Read only memory2. non- volatile3. Three types – PROM , EPROM , EEPROM..
  • PROMProgrammable Read Only MemoryEPROMErasable Programmable ROMEEPROMElectrically Erasable Programmable ROM
  • 1. Speed up the way application work2. called microprocessor3. fast memory4. more expensive then RAM
  • 1. Permanent Storage Device,2. non-volatile,3. Doesn’t loose data when computer is turned off..
  • 1. It is readable or writable2. It refers movable and backup storage3. It is permanent until changed by user..
  • There are mainly three types:-1. Magnetic Disks2. Optical Disks3. Magnetic Tapes..
  • 1. Consist of magnetically coated disks2. Two types:- Hard Disk Drive, Floppy Disk..
  • 1. Invented in 1950s.,2. Non-volatile,3. store data or information4. Use thicker, metallic platters for storage5. Large capacity
  • Floppy Disk Diskettes Flexible disk and Floppies The plastic disk inside the diskette cover is flexible Portable storage media Floppy disk drives (FDD) Disk surface to represent ones and zeroes. Characters are represented by positive + and – charges using ASCII code. 8- 22
  •  High capacity Known as a floppy-disk cartridge Require special disk drives Three well known types ◦ Zip disks (Iomega) 100MB, 250MB, 750MB ◦ HiFD disks (Sony) 200MB, 720MB, read and store data on 1.44MB disk ◦ SuperDisks (Imation) 240MB, 120MB 8- 23
  • Zip disks (Iomega) HiFD disks (Sony) SuperDisks (Imation) 8- 24
  •  Compact Permanent storage Optical disk use reflected light. The 1s and 0s are represented by flat areas called lands and bumpy areas called pits. Two common types ◦ CD ( 650 MB to 1GB) ◦ DVD ( 4.7 GB to 17 GB) 8- 25
  •  Optical format From 650 MB to 1 GB capacity Rotation speeds varyIt determines how fast data can be transferred from the CD24X or 24- speed CD drive can transfer 3.6 MB per second. Types ◦ Read only: CD-ROM ◦ Write once: CD-R ◦ Rewriteable: CD-RW ◦ Picture CDs and Photo CDs 8- 26
  •  Digital Versatile Disk or Digital Video Disk (DVD) Similar to CDs, but can store more data Types ◦ Read only ◦ Write once ◦ Rewritable 8- 27
  •  Solid-state storage Internet hard drives Magnetic tape 8- 28
  •  New standard in storage Blu-Ray ◦ New disks use blue laser light instead of the red laser light used in traditional CD players ◦ Disks may ultimately hold  Over 30GB on one-sided disks  Over 50GB on two-sided disks 8- 29
  • for your Cooperation Please ask the question very frankly with us…
  • THE ENDKHUDA HAFIZ