IT Tools and Business Systems

IT Tools and Business Systems
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IT Tools and Business Systems

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Publisher: Laxmi Publications
ISBN: 9789380298917
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Contents 1. Computer Appreciation ......................................................................................................... 1 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9 1.10 1.11 1.12
Characteristics of Computers .......................................................................................................... 1 Input Unit ........................................................................................................................................ 2 Output Unit ..................................................................................................................................... 2 Primary Storage Unit ....................................................................................................................... 2 Central Processing Unit CPU ........................................................................................................ 2 Computer System ............................................................................................................................ 3 Number System ............................................................................................................................... 3 Binary System ................................................................................................................................. 4 Conversion from Binary to Decimal ................................................................................................ 5 Conversion from Decimal to Binary ................................................................................................ 6 ASCII Code ..................................................................................................................................... 7 Unicodes ....................................................................................................................................... 12
2. Computer Organization ....................................................................................................... 19 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11
The Processor Central Processing Unit ...................................................................................... 19 Processor Speed ............................................................................................................................ 20 Cache Memory .............................................................................................................................. 21 RAM ............................................................................................................................................. 22 ROM .............................................................................................................................................. 23 Booting Process ............................................................................................................................ 24 Memory ......................................................................................................................................... 24 Secondary Storage Units .............................................................................................................. 27 Mass Storage Devices .................................................................................................................. 29 Managing Disk Partitions ............................................................................................................. 32