Development of computer hardware:
Vacuum tube era
The first electronic digital computer: ENIAC
Programming languages: machine language
It covers an area of 170 square meters
Power 150 kilowatts
17468 Tube
Transistor era
The first transistor line computer: TRADIC
Programming languages: FORTRAN
There are older operating systems
Power consumption 30 watts
Transistor 800
The era of small and medium-scale integrated circuits
High-level programming language
To achieve a time-sharing operating system
Large-scale, ultra large scale integrated way with you age
Microprocessor birth
Parallelism, pipelining, cache, virtual memory concept appears
Computer Software Development:
Machine language ---- "---- assembly language" Higher process-oriented language ------ "level object-oriented language