CONTENTS 1
1．What can a computer do? 1
2．Computers(Ⅰ)a dialogue 4
3．Computers(Ⅱ)a dialogue 8
4．Digital computers a dialogue 12
5．Analogue computers 16
6．Basic functional units of a computer 20
7．The binary system 23
8．Instructions 26
9．Logic circuits 30
10．Input-output units 33
11．Memory units 36
12．Arithmetic units 40
13．Control units 43
14．Software 46
15．The concept of a program 50
16．Arithmetic operations(Ⅰ) 54
17．Arithmetic operations(Ⅱ) 58
18．Loading 61
19．Branching without looping 64
20．A Typical subroutine 68
21．Punched card equipment 72
22．Non-impact printing 75
23．Visual display output 79
24．Programming languages 83
25．Fortran,algol and cobol 86
26．Programming s upstart language:APL 90
27．Operating systems(OS)provide automatic systems control 94
28．A Square-summing,high-speed multiplier 97
29．The role of small computers(Ⅰ) 101
30．The role of small computers(Ⅱ) 105