The 4th Generation of computers (~1971/1975 to ~1990) have a dedicated Central Processing Unit IC and almost exclusively use Integrated Circuits throughout their design. The CPU allows a large amount of complex circuitry to be contained within one chip, with the ALU, Buffers, Cache, Registers, memory control, look-up tables, power management and many other advanced features to be contained within a single IC chip. Before hand, this circuitry formed most of the size of a computer.
This allows the computers to be very small, some being built on a single circuit board, giving them the name of Microcomputer. You still get Mainframes, Supercomputers and Minicomputers, but it was the Microcomputer with its cheap price which really brought the computer to the home market.
- Acorn A3000
- Acorn Atom
- Acorn Archimedes 410/1
- Acorn System 1
- AES Alphaplus 14
- Amiga 1500
- Amstrad CPC6128
- Amstrad Notepad NC100
- Amstrad PCW9512
- Apricot Portable
- Atari 520STFM
- BBC Master
- BBC Master Compact
- BBC Micro
- Bytronic Becca+
- Cambridge Computer Z88
- Celestix Aries
- Commodore 64
- Compugraphic MDT 350
- Cromemco System Three
- Digital pdp11/23
- DK’Tronics Keyboard
- Dragon 32
- Elektor Junior
- Grundy Newbrain
- HP 120
- HP 5036A
- IASIS ia7301 Computer In A Book
- IBM AT
- Intel MCS-8
- Jupiter ACE
- Kaypro 2X
- LJ Electronics Chas
- Mattel Aquarius
- MITS Altair 8800
- Morrows Keyed-Up 8080
- MOS KIM-1
- Motorola MEK6800D2
- Multitech MPF-I
- Multitech MPF-IP
- Nascom-1
- Ohio Scientific Challenger 1P
- Oric-1
- Oric Atmos
- Osborne 1
- Processor Technology Sol-20
- Psion Organiser II
- Quest Super Elf
- Rockwell AIM 65
- Science of Cambridge Mk14
- SGS NBZ80-S
- Sharp MZ-80B
- Sharp MZ-80K
- Sinclair PC200
- Sinclair ZX80
- Sinclair ZX81
- Sinclair ZX Spectrum
- Sinclair ZX Spectrum+
- Sirius 1
- Static Devices CP-9000
- Synertek SYM Model 1
- Tangerine Microtan 65
- Tektronix 4051
- Texas Instruments TI-99/4A
- Transdata 101 DD
- Video Genie EG3003
Game Orientated Machines
