包邮计算机专业英语教程

part i knowledge points (**部分 知识点)
text 1 introduofion fo information teohnology
1.1 computer literacy
1.2 information system
1.3 information technology (it)
1.4 what is a computer
1.5 components of a computer
1.6 categories of computers
text 2 system unit
2.1 central processing unit (cpu)
2.2 memory
2.3 ports and connectors
text 3 input and output
3.1 input
3.2 output