| Year | Month | Japan | Month | World |
| 1971 |
|
|
12 | Intel developed the 4bit microprocessor, MPU 4004, fisrt in the world |
| 1974 |
|
|
| Intel developed an 8bit microprocessor, MPU 8080 |
| 1975 |
|
|
01 | MITS Inc. put Altair 8800 kit on the market |
| 1976 |
08 |
NEC announced TK-80, a do-it-yourself PC kit for training. |
| |
| 1977 |
|
|
06 | Apple Computer put Apple II on the market |
| 1978 |
09 |
Hitachi announced a 8-bit personal computer, Basic Master MB-6880 |
| Intel developed the 16bit microprocessor, MPU 8086 |
| 1978 |
12 |
Sharp put a semi-kit, MZ-80K on the market |
| |
| 1979 |
05 |
NEC announced its first personal computer, PC-8001 |
| |
| 1980 |
05 |
Oki Electric announced if800 series, the all-in-one personal computer, set printer in the machine |
| |
| 1980 |
|
Hitachi developed a personal computer, Basic Master Level3 MB-6890, MB-6891 which could display Kana(Japanese alphabet) |
| |
| 1981 |
05 |
Fujitsu announced a 8-bit personal computer, FM-8 |
08 | IBM put IBM PC on the market |
| 1981 |
12 |
Mitsubishi Electric a 16-bit business personal computer, MULTI 16 |
| |
| 1982 |
10 |
Toshiba put PASOPIA 16, the 16bit Japanized MS-DOS based personal computer |
11 | Compaq put the portable personal computer on the market |
| 1982 |
10 |
NEC announced a 16-bit personal computer, PC-9801 |
| Intel delivered 80286 microprocessor |
| 1982 |
|
Hitachi developed a 16-bit personal computer, 16000 series MB 16001 |
| |
| 1983 |
|
Hitachi developed a 16-bit personal computer for OA, FA, B series B-16 |
| Apple Computer put Lisa on the market |
| 1983 |
|
|
| Micosoft announced the OS, 'Windows' |
| 1983 |
|
|
| Novel put Netware on the market |
| 1984 |
12 |
Fujitsu announced a 16-bit personal computer for business use, FM16 β(Beta ) |
08 | IBM put IBM PC-AT on the market |
| 1984 |
|
|
| Motorola announced Motorola 68020 microprocessor |
| 1984 |
|
|
| Apple Computer put the personal computer, 'Macintosh' on the market |
