The Spectrum was among the first mainstream-audience home computers in the UK, similar in significance to the Commodore 64 in the USA. The introduction of the ZX Spectrum led to a boom in companies producing software and hardware for the machine, the effects of which are still seen; some credit it as the machine which launched the UK IT industry. Licensing deals and clones followed, and earned Clive Sinclair a knighthood for “services to British industry”.
Processor Type: Zylog Z80
Processor Speed: 3.5MHz
RAM: 48 KB
Display: Connection via UHF for TV Tuner
Sound: One Channel
Storage: None Internal, External Cassette, Microdrive tape loop storage
Network: ZX Net (to allow communication between more than one Spectrum)
Original Release Date: October 1984
Cost (New in 1984): £179.95
Cost (In 2018 Price): £578.59
Modifications I have performed:
Removed the original UHF output and replaced it with a composite output.
Replaced keyboard membrane, as it was faulty when I purchased the computer.
Added divMMC Future that allows software to be loaded via SD Card connected to adaptor plugged into the Expansion port.
Replaced power supply with a modern one with a more stable voltage output.
Cost to me for computer £25.00
Cost to me for repairs and upgrades £89.97
Sinclair Spectrum +
Start up screen
Running demo program
The divMMC Future with SD card and joystick port
Menu for loading software