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Input devices. Block diagram of basic computer. Central processing unit (CPU ). Storage devices. By Christabel 10QPL. Output devices. Knowledge of i.c.t components. CPU Central processing unit VDU Visual display unit CD-ROM Compact Disk – Read- only memory DVD Digital versatile disk
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Input devices Block diagram of basic computer Central processing unit (CPU) Storage devices By Christabel 10QPL Output devices
Knowledge of i.c.t components CPU Central processing unit VDU Visual display unit CD-ROM Compact Disk – Read- only memory DVD Digital versatile disk RAM Random access memory ROM Read – only memory BIT Binary digit MB Megabyte GB Gigabyte LCD Liquid crystal display DPI Dots per inch OCR Optical character recognition SVGA Super video graphics array PPM Pages per minute CD-R Compact disk – recordable CD-RW Compact disk rewritable WORM Written – once read only GUI Graphical user interface WIMP Window, icons , menus , pointers
Desktop (PC) Visual Display Unit (VDU) – Output Keyboard – Input Central Processing UNIT (CPU) CD ROM Input DVD drive – backing store or input/ output Speakers – input Central Processing Unit (CPU) Mouse - input