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Knowledge Of ICT Components. Block D iagram Of Basic Computer:. Input devices . Central processing unit ( cpu ). Storage devices . Output Devises. Desktop PC. CD-ROM input DVD drive –(backing store or input/output). USB slots (backing store or input/output).
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Block Diagram Of Basic Computer: Input devices Central processing unit (cpu) Storage devices Output Devises
Desktop PC CD-ROM input DVD drive –(backing store or input/output) USB slots (backing store or input/output) Central processing unit (CUP) Visual Display unit (VDV) –output Computer tower containing hard disk unit (backing store) Speakers- input Keyboard-Input Mouse – input
Keywords: 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 MG - 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 – Write - Once Read - Many GUI – Graphical User Interface WIMP – Windows,Icons,Menus,Pointers
Input Devices Advantages/Disadvantages Device Features