Manufacturer: Sinclair
Launches: 1980
CPU: NEC D780C (Z80 clon) @ 3.25MHz
Memory: 1 KB ~ 16 KB
Hard drive: None
Operating system: BASIC

It was the first computer available in the UK for one hundred pounds.

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Manufacturer: Sinclair
Launches: 1981
CPU: Zilog Z80 @ 3.25MHz
Memory: 1 KB ~ 64 KB
Hard drive: None
Operating system: BASIC

The successor and improved version of the ZX80 was the lowest-priced computer of its time and was sold in kit form for 49.95 pounds sterling, and for 69.95 assembled.

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Manufacturer: Sinclair
Launches: 1982
CPU: Zilog Z80A @ 3.5MHz
Memory: 16 KB ~ 48 KB
Hard drive: None
Operating system: BASIC

The original model is known as the ZX Spectrum 16.
In a later version, 32KiB more memory was added to this device, giving rise to the ZX Spectrum 48 model.

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Manufacturer: Oric
Launches: 1982
CPU: Synertek SY6502A o Rockwell R6502AP (clones de MOS6502) @ 1MHz
Memory: 16 KB
Hard drive: None
Operating system: Basic

Seeing the success of the ZX Spectrum, the company Tangerine (which produced one of the first kit computers based on the 6502) launched this computer under its subsidiary Oric, which was slightly cheaper, had an RGB monitor output, a sound chip and a better keyboard... but its ROM had numerous bugs.

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Manufacturer: Sinclair
Launches: 1984
CPU: Zilog Z80 @ 3.54MHz
Memory: 48 KB
Hard drive: None
Operating system: BASIC

Sinclair incorporated a professional-looking keyboard by abandoning the rubber keys.

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Manufacturer: Sinclair
Launches: 1984
CPU: Motorola 68008 @ 7.5MHz
Memory: 128 KB ~ 896 KB
Support A: ZX Microdrive
Support B: ZX Microdrive
Hard drive: None
Operating system: Sinclair QDOS
Innovations: The first multitasking personal computer to hit the market.

This computer was Sir Clive Sinclair's first attempt at creating a business computer.

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Manufacturer: Oric
Launches: 1984
CPU: Synertek SY6502A o Rockwell R6502AP (clones de MOS6502) 6502 @ 1MHz
Memory: 16 KB
Hard drive: None
Operating system: Basic

This second model corrects the main problem of the Oric-1, which was its "semi-mechanical pivot" keyboard.

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Manufacturer: Amstrad
Launches: 1985
CPU: Zilog Z80A @ 4MHz
Memory: 64 KB
Support: Diskette 3"
Hard drive: None
Operating system: CP/M
Innovations: It replaced the tape media with a 3" floppy disk drive.

This was the logical evolution of the CPC 464 model.
But it had a short life, being replaced after six months by the CPC 6128, which had twice the RAM, allowing it to run programs that couldn't be run with the CPC 464's limited memory.

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Manufacturer: Amstrad
Launches: 1985
CPU: Zilog Z80A @ 4MHz
Memory: 72 KB
Support: Cassette
Hard drive: None
Operating system: BASIC 1.1 ver. sin Ñ or BASIC 1.0 ver. con Ñ

An Amstrad distributed by Indescomp (the brand's distributor in Spain, which would later become the subsidiary Amstrad Spain) exclusively for the Spanish market. It was identical to the CPC 464, but had a printed circuit board in the ROM socket that included an 8KB RAM chip, increasing the original CPC 464's memory from 64KB to 74KB, theoretically to accommodate the new commands and routines of the new BASIC 1.1 it incorporated.
But this was only a ruse to avoid the 15,000-peseta tariff that all microcomputers imported into Spain with 64KB or less of RAM had to pay starting in August 1985.
Subsequently, all computer keyboards sold in Spain were required to be adapted to Spanish, so the Ñ key had to be added to the computer, and the translated ROM version of BASIC 1.0 was used.
A few months later, Spain joined the European Economic Community, so the import tax had to be eliminated.
Amstrad then incorporated the Ñ key into the original CPC 464 model and stopped selling the CPC 472 model.

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Manufacturer: Amstrad
Launches: 1986
CPU: Intel 8086 @ 8MHz
Memory: 640 KB
Support: Diskette 5¼"
Hard drive: None
Operating system: MS-DOS 3.2

This was an update to the previous model, the PC1512, which increased the RAM to 640 KB and incorporated EGA graphics.

There was a version with a dual 5.5-inch floppy disk drive or a hard drive (PC1640HD20).

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Manufacturer: Amstrad
Launches: 1988
CPU: Intel 8086
Memory: None
Hard drive:
Operating system: MS-DOS 3.30 or Windows 2.03

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Manufacturer: Sinclair
Launches: 1988
CPU: Zilog Z80 @ 3.54MHz
Memory: 128 KB
Support: Diskette 3"
Hard drive: None
Operating system: BASIC

It incorporated a 3" disk drive and a disk operating system, +3DOS, in ROM.

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Manufacturer: Amstrad
Launches: 1989
CPU: Intel 80286 @ 12.5MHz
Memory: 1 MB ~ 4 MB
Hard drive:
Operating system: MS-DOS 4.01 or Windows 2.1

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Manufacturer: Amstrad
Launches: 1989
CPU: Intel 80386 @ 20MHz
Memory: 4 MB
Hard drive:
Operating system: MS-DOS 4.02 or Windows

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Manufacturer: Amstrad
Launches: 1989
CPU: Intel 80386
Memory: 1 MB
Hard drive:
Operating system: MS-DOS

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Manufacturer: Amstrad
Launches: 1989
CPU: Intel 80286
Memory: 1 MB
Hard drive:
Operating system: MS-DOS

Version of the PC2286 intended for the large business market.

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Manufacturer: Amstrad
Launches: 1990
CPU: Zilog Z80 @ 4MHz
Memory: 128 KB
Support: Diskette 3"
Hard drive: None
Operating system: AMSDOS
Innovations: It improved upon the Amstrad 6128 in terms of graphics, increasing the palette to 4,096 colors, of which 31 could be displayed simultaneously on screen, and adding support for managing sprites.
It also incorporated DMA in the audio department.

The upgrade to the Amstrad 6128 model, which was only on the market for three months.
Compared to its competitors in the 1990 market (the Atari ST and the Commodore Amiga), its 8-bit processor was already outdated.

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