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.

ZX Spectrum
Issues 2 onwards

ZX Spectrum+

ZX Spectrum+ 128K

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 by Amstrad to be produced in grey

ZX Spectrum +3

The only ZX Spectrum model to have a built-in disk drive.

ZX Spectrum +2A/B

Timex models

Features Original Price

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.
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