- MicroVersaTrip Plus and MicroVersaTrip PM Trip Units
- The Actiwatch User Manual - Salusa Medical AB
- AR9020 User Guide AR9020 Bedienungsanleitung. -
- ZX Spectrum - pedia
MicroVersaTrip Plus and MicroVersaTrip PM Trip Units
The Spectrum was released as eht different models, ranging from the entry level with 16 KB RAM released in 1982 to the ZX Spectrum 3 with 128 KB RAM and built in floppy disk drive in 1987; together they sold in excess of 5 million units worldwide (not counting clones).
The Actiwatch User Manual - Salusa Medical AB
The Spectrum was among the first mainstream-audience home computers in the UK, similar in snificance to the Commodore 64 in the USA.
AR9020 User Guide AR9020 Bedienungsanleitung. -
Hardware desn was by Richard Altwasser of Sinclair Research, and the outward appearance was desned by Sinclair's industrial desner Rick Dickinson.
ZX Spectrum - pedia
The introduction of the ZX Spectrum led to a boom in companies producing software and hardware for the machine, The Commodore 64, Dragon 32, Oric-1 and Atmos, BBC Microcomputer and later the Amstrad CPC range were rivals to the Spectrum in the UK market during the early 1980s.
Spectrum plus user manual:
Rating: 90 / 100
Overall: 96 Rates