part 1 knowledge pointe text 1 in+roduotion to informafion teohnology 1.1 puter literacy 1.2 information system 1.3 information technology (it) 1.4 what is a puter 1.5 ponents of a puter 1.5.1 hardware 1.5.2 software 1.6 categories of puters 1.6.1 superputers 1.6.2 mainframe puters 1.6.3 midrange puters 1.6.4 miniputers 1.6.5 personal puters text 2 system unit 2.1 central processing unit (cpu) 2.1.1 control unit 2.1.2 arithmetic and logic unit 2.1.3 registers 2.1.4 characteristics of cpu 2.2 memory 2.2.1 puter memory cell 2.2.2 types of memory 2.2.3 ram 2.2.4 cache 2.2.5 rom 2.2.6 virtual memory 2.3 ports and connectors 2.3.1 serial ports 2.3.2 parallel ports 2.3.3 scsi ports 2.3.4 usb ports 2.3.5 pc card slots text 3 input and output 3.1 input 3.1.1 input devices 3.1.2 keyboards 3.1.3 pointing devices 3.1.4 voice input 3.1.5 digital cameras 3.1.6 video input 3.1.7 scanning and rea devices 3.1.8 terminals 3.1.9 biometric input 3.2 output 3.2.1 output devices 3.2.2 printers 3.2.3 speakers and headphones 3.2.4 other output devices 3.2.5 important concepts text 4 secondary storage 第二部分 参译文 第三部分 题与思 第四部分 实践指导 第五部分 复题 参文献
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