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Sinclair Models
Features
Original Price
ZX Spectrum
Issue 1
The original ZX Spectrum had a grey rubber keyboard which pressed down on a touch sensitive matrix similar to its predecessor, the ZX81.
Standard R.A.M. was 16K or 48K. Sinclair memory upgrade was a small pcb which plugged in on top of the motherboard P.C.B.
Was originally supplied with ZX Power Supply, 2 x 3.5mm tape leads, RF (aerial) lead and 'HORIZONS' demonstration cassette by Psion.
Standard R.A.M. was 16K or 48K. Sinclair memory upgrade was a small pcb which plugged in on top of the motherboard P.C.B.
Was originally supplied with ZX Power Supply, 2 x 3.5mm tape leads, RF (aerial) lead and 'HORIZONS' demonstration cassette by Psion.
£125 (16K RAM)3
£175 (48K RAM)3
Both prices exclude postage & packing @ £4.993
£175 (48K RAM)3
Both prices exclude postage & packing @ £4.993
ZX Spectrum
Issues 2 onwards
Significant PCB upgrade. Was originally supplied with ZX Power Supply, 2 x 3.5mm tape leads, RF (aerial) lead and 'HORIZONS' demonstration cassette by Psion.
££££
ZX Spectrum+
Upgraded keyboard.
££££
ZX Spectrum+ 128K
First 128K model.
££££
Amstrad models
Features
Original Price
ZX Spectrum +2
This was the first Sinclair branded computer from Amstrad. Whilst the external appearance of the +2 is unsurprisingly similar to Amstrad's CPC464, apart from a few code changes in ROM, it is almost the same computer as the Sinclair 128K model.
Note: This was the only Spectrum computer to be produced in a grey plastic case.
Note: This was the only Spectrum computer to be produced in a grey plastic case.
££££
ZX Spectrum +3
The only ZX Spectrum model to have a built-in 3" disk drive.
££££
ZX Spectrum +2A/B
Cassette version of the +3, similar in appearance to the orginal +2 but with a black plastic case.
££££
Timex models
Timex Computer 2048
££££
T/S 2068
The US version of the ZX Spectrum is designed to run on the NTSC TV system. It has 4 screen modes, although all except the standard display are really only accessible through machine code.
There is a ROM cartridge slot to the right of the keyboard. The cartridges for this are not compatible with the ZX Interface 2 as they are of a completely different design. A sound chip with 3 channels is included and there are a few new keywords at the expense of some of the lesser used characters found on the Spectrum.
There is a ROM cartridge slot to the right of the keyboard. The cartridges for this are not compatible with the ZX Interface 2 as they are of a completely different design. A sound chip with 3 channels is included and there are a few new keywords at the expense of some of the lesser used characters found on the Spectrum.
US$199.952
Investronica
Features
Original Price
Investronica Spectrum+ 128K
pictured with monitor, printer and keypad
Spanish version of the Sinclair ZX Spectrum+ 128K.
50000 pts1
References
1. "The Spectrum with No Name", Your Spectrum, December 1985 p.182. "Souped up Spectrum", Personal Computer News, 8th December 1983 p.25
3. "The world's best personal computer for under £500" - advert, Sinclair, August 1982 p.11
External Links
HORIZONS by Psion at World of SpectrumLast Revision : 25/05/2024