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Storage Peripherals

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Introduction

Essay A01C(i) - Input / Output Peripherals Storage Peripherals Memory:- SD-RAM - Single Data Random Access Memory is commonly used in computers for temporary storage of data. Because it needs a constant power source to contain stored data, it loses all information it contains when the power is cut or the computer is turned off. Its access time is measured in nanoseconds (ns) because the time it takes to access data, change a 1 to a 0 or 0 to a 1 is so small. It comes in specifications of PC100, PC133, PC166, PC200, PC233 and PC266, the best specification being PC266. DIMM - This type of memory is specially designed for 128 pin DIMM memory slots. The advantage of this is that more information can be transferred at one time and more information stored on one slot. DD-RAM - Double Data Random Access Memory is twice as fast as Single Data RAM because two sets of information are transferred at one time. One disadvantage of this type of storage is that it needs a double data processor to comprehend the transfer of data. ...read more.

Middle

It uses floppy disks that range from 1.44 to 2.88 megabytes in capacity and can be double sided. 51/4 Inch Floppy Drive:- This was one of the first removable storage devices made and is very rare these days because of its low performance and little capabilities. The disks for this device are usually only 218 kilobytes in capacity. Cassette Drive:- This is one of the earliest forms of removable storage dating back to the first computers where data was stored on the magnetic ribbon of cassette tapes. One of the earliest examples of this was the Commodore 64 entertainment system. However this idea of storage was soon scrapped due to the unreliability of the length of time that data could be accurately stored on the cassette. Deterioration or variation of the magnetic field produced by the ribbon causes binary 1's or 0's to be read as their opposites, therefore data would become corrupt in a short space of time. These days cassettes are used for the storage of audio data. ...read more.

Conclusion

These are very small devices designed for almost instant storage of data. This method of storage has not long been researched but is used in many communication devices such as mobile phones (sim cards), and phone cards. This gold coloured chip can usually only contain upto 1Mb of information but is used because of its speed as a storage device and because it is so small. Input & Output Peripherals (Listed) Bus Devices 3D Accelerators / Graphics Cards Display Adapters Global Positioning Devices Human Interface - eg. Touchscreen Monitors Devices Specialised Audio Controlls Device Specifically Designed For Human Use Imaging Devices - eg. Scanners Digital Cameras Ion Cameras Digital Camcorders Laser Detection Devices Infrared Devices Keyboards Comunication - eg. Modems Devices Ethernet Adapters LAN, ISDN, ADSL Connection Devices Display Devices - eg. TFT Monitors CRT Monitors Plasmascreens VGA Monitors SVGA Monitors CTX Monitors Monochrome Monitors PVGA Monitors Liquid Crystal Displays (LCD) Mouse Network Adapters PCMCIA Cards Printers SCSI Controller Cards Sound Cards Game Controllers - eg. Joypads Joysticks Flight Yokes Hat Controllers Steering Wheels + Pedals System Devices - eg. Advanced Configuration Devices Power Interface Bios Plug and Play BIOS USB Hubs Ports - eg. Com (1-65536) LPT Serial Digital ...read more.

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