Editing Sinclair Research (section)

== Products ==
;Wrist Calculator
The [[Sinclair Wrist Calculator|Wrist Calculator]] was released by Sinclair Instrument in 1977.<ref>{{cite web|url=http://www.vintagecalculators.com/html/wrist_calculator.html|title=Wrist Calculator|access-date=13 October 2015}}</ref>

;Multimeter DM2
A digital [[multimeter]] with an LED display, measuring voltage (DC and AC), current and resistance, released in 1975.{{Citation needed|date=July 2022}}

;MK14
The [[MK14]] (Microcomputer Kit 14) was a [[Electronic kit|computer kit]] sold by Science of Cambridge, introduced in 1977 for £39.95.

;ZX80
The [[ZX80]] [[home computer]] was launched in February 1980 at £79.95 in kit form and £99.95 ready-built.<ref name="InfoWorld Oct 27, 1980"/> In November of the same year Science of Cambridge was renamed Sinclair Computers Ltd.

[[File:Timex Sinclair 1000 FL.jpg|right|thumb|[[Timex Sinclair]] 1000, a U.S. version of the Sinclair ZX81]]

;ZX81
The [[Sinclair ZX81|ZX81]] (known as the [[Timex Sinclair 1000|TS 1000]] in the United States) was priced at £49.95 in kit form and £69.95 ready-built, by mail order.

[[File:ZX Spectrum128K.jpg|right|thumb|[[ZX Spectrum 128]], an updated version of the original 1982 ZX Spectrum]]

;ZX Spectrum
The [[ZX Spectrum]] was launched on 23 April 1982, priced at £125 for the 16 [[Kilobyte|KB]] RAM version and £175 for the 48 KB version.

;TV80
The [[TV80]] was a pocket [[television]]. Launched in September 1983, it used a flattened [[Cathode-ray tube|CRT]] unlike Sinclair's previous portable televisions. The TV80 was a commercial failure<ref>{{cite web | url=https://collection.sciencemuseumgroup.org.uk/objects/co8185371/sinclair-ftv1-tv-80-miniature-television-receiver-television-receiver | title=Sinclair FTV1 (TV-80) miniature television receiver &#124; Science Museum Group Collection }}</ref> selling only 15,000 units and not covering its development costs of £4m.{{Citation needed|date=December 2009}}

;Sinclair QL
The [[Sinclair QL]] was announced in January 1984,<ref name="Sue Denham 1984"/> priced at £399. Marketed as a more sophisticated [[32-bit]] [[microcomputer]] for professional users, it used a [[Motorola 68008]] processor. Production was delayed by several months, due to unfinished development of hardware and software at the time of the QL's launch.<ref name="sunrise"/> Hardware reliability problems and software bugs resulted in the QL acquiring a poor reputation from which it never recovered.

;ZX Spectrum+
The ZX Spectrum+ was a repackaged ZX Spectrum 48K, launched in October 1984.

;ZX Spectrum 128
The ZX Spectrum 128, with RAM expanded to 128 kB, a [[sound chip]] and other enhancements, was launched in Spain in September 1985 and the UK in January 1986, priced at £179.95.<ref name="comphist-spec128"/>

;Computer peripherals
Sinclair created various peripherals for its computers, including memory expansion modules, the [[ZX Printer]], and the [[ZX Interface 1]] and [[ZX Interface 2]] add-ons for the ZX Spectrum. A number of QL peripherals were developed by other companies but marketed under the Sinclair brand. External storage for the Spectrum was usually on [[cassette tape]]s, as was common in that era. Rather than an optional [[floppy disk drive]], Sinclair instead opted to offer its own [[mass storage]] system, the [[ZX Microdrive]], a tape-loop cartridge system that proved unreliable. This was also the primary storage device for the QL.

[[File:Sinclair Research X1 FM Radio (front).jpg|right|thumb|X1 Button Radio (1997)]]

;X1 Button FM Radio
In June 1997 Sinclair Research released the X1 radio for £9.50. This miniature mono [[FM broadcasting|FM radio]], powered by a [[CR2032]] battery, had a fixed volume and was inserted in the ear. The X1 radio had three buttons, an on/off switch, a ''Scan'' button, and a ''Reset'' button to restart the scanning process. It came with a short length of aerial and a detachable ear hook.<ref>{{cite web|title=Planet Sinclair|url=http://www.nvg.ntnu.no/sinclair/audio/x1radio.htm|access-date=12 April 2011}}</ref>

=== Cancelled projects ===
The following computer products were under development at Sinclair Research during the 1980s but never reached production:

;LC3
Standing for "Low Cost Colour Computer", the ''LC3'' was developed during 1983 by [[Martin Brennan (engineer)|Martin Brennan]] and was intended to be a cheap Z80-based games console implemented in two chips, using [[read-only memory|ROM]] and (non-volatile) [[random-access memory|RAM]] cartridges for storage. A multi-tasking [[operating system]] for the ''LC3'', with a full windowing [[GUI]], was designed by Steve Berry. It was cancelled in November 1983 in favour of the [[Sinclair QL|QL]].<ref name="sunrise">{{cite web|url=http://www.nvg.ntnu.no/sinclair/computers/ql/ql_sst.htm|title=The Quantum Leap - to where?|work=Sinclair and the 'Sunrise' Technology|author=Ian Adamson|author2=Richard Kennedy |access-date=2006-12-15}}</ref>
;SuperSpectrum
Intended to be a [[Motorola 68008|68008]]-based [[home computer]], equipped with built-in [[ZX Microdrive]], joystick, [[RS-232]] and ZX Net ports. Sinclair's [[SuperBASIC]] programming language was originally intended for this model but was later adopted for the QL. ''SuperSpectrum'' was cancelled in 1982 after the specification of the ''ZX83'' (QL) had converged with it.<ref name="sunrise"/> This project is not to be confused with ''Loki'', which was described as the "SuperSpectrum" in an article in the June 1986 issue of ''[[Sinclair User]]'' magazine.
;Pandora
This was to be a portable computer with an integral flat-screen CRT display. Initially to be [[ZX Spectrum]]-compatible with a faster [[Zilog Z80|Z80]] [[Central processing unit|CPU]], a built-in [[ZX Microdrive]] and a new 512×192-pixel monochrome video mode. Due to the limited size of flat CRT that could be manufactured, a series of folding lenses and mirrors were necessary to magnify the screen image to a usable size. The project was cancelled after the Amstrad take-over, but the ''Pandora'' concept eventually transformed into the Cambridge Computer [[Cambridge Z88|Z88]].<ref>{{cite newsgroup |title = Re: Sinclair Loki Superspectrum |author = Rupert Goodwins |date = 12 May 2002 |newsgroup = comp.sys.sinclair |message-id= 3cde626f.45085128@news-text.blueyonder.co.uk |url = http://groups.google.com/group/comp.sys.sinclair/msg/6bdb4bd808bdb3d6?dmode=source |access-date = 2006-11-23}}</ref><ref name="unreleased">{{cite web|url=http://www.nvg.ntnu.no/sinclair/computers/loki/loki.htm |title = Loki, Janus, Pandora: The Unreleased Sinclair Computers|work=Planet Sinclair|access-date=2006-12-15}}</ref><ref name="dickinson-pandora">{{cite web|url=https://www.flickr.com/photos/9574086@N02/sets/72157600856913881/|title=Pandora to Z88|work=Flickr|author=Rick Dickinson|date=16 July 2007|access-date=2008-04-21}}</ref>
;[[Loki (computer)|Loki]]
This project was intended to create a greatly enhanced [[ZX Spectrum]], possibly rivalling the [[Amiga|Commodore Amiga]]. ''Loki'' was to have a 7&nbsp;MHz [[Zilog Z80|Z80]]H [[Central processing unit|CPU]], 128 KiB of RAM, and two custom chips providing much enhanced graphics and audio capabilities. After the Amstrad buy-out in 1986, two engineers who had worked on the project, [[John Mathieson (computer scientist)|John Mathieson]] and [[Martin Brennan (engineer)|Martin Brennan]], founded [[Flare Technology]] to continue their work.<ref name="unreleased"/>
;Bob/Florin
According to [[Rupert Goodwins]], this was a project to produce an add-on [[floppy disk]] drive for the [[ZX Spectrum]].<ref>{{cite newsgroup |title = Re: Does anyone remember the Spectrum to Spectrum+ upgrade? |author = Rupert Goodwins |date = 18 August 1999 |newsgroup = comp.sys.sinclair |message-id= 7pf9kh$ih1$1@neptunium.btinternet.com |url = http://groups.google.com/group/comp.sys.sinclair/msg/92cdbd9b554f978e?dmode=source |access-date = 2006-11-23 }}</ref>
;Tyche
This codename was assigned to a QL follow-on project running from 1984 to 1986. Among the features associated with ''Tyche'' were increased RAM capacity, internal [[floppy disk]] drives, the [[Psion (computers)|Psion]] ''Xchange'' application suite on ROM, and possibly the [[Graphics Environment Manager|GEM]] [[GUI]].<ref>{{cite web|url=http://www.mail-archive.com/ql-users@quanta.org.uk/msg01982.html|author=Tony Tebby|work="ql-users" mailing list|title=Q-Emulator 2|access-date=2006-12-15}}</ref>
;Janus
This name has been associated with a design concept for a "Super QL" based on [[wafer-scale integration]] technology.<ref name="unreleased"/><ref name="dickinson-ql">{{cite web
|url=https://www.flickr.com/photos/9574086@N02/sets/72157600854938578/
|title=QL and Beyond
|work=Flickr
|author=Rick Dickinson
|date=16 July 2007
|access-date=2008-04-21}}</ref>
;Proteus
This was rumoured to be a hypothetical portable version of the QL similar to ''Pandora''.<ref>{{cite newsgroup |title = A little piece of Sinclair history... |author = Rupert Goodwins |date = 26 October 1999 |newsgroup = comp.sys.sinclair |message-id= 7v3mp3$5u2$1@uranium.btinternet.com |url = http://groups.google.co.uk/group/comp.sys.sinclair/msg/d86d60ac12c92da4?hl=en&dmode=source|access-date = 2009-05-04}}</ref>

;Sinclair X-1
In November 2010 Sinclair told ''[[The Guardian]]'' newspaper that he was working on a new prototype electric vehicle, called the [[Sinclair X-1|X-1]], to be launched within a year. "Technology has moved on quite a bit, there are new batteries available and I just rethought the thing. The C5 was OK, but I think we can do a better job now."<ref>{{cite news|url=https://www.theguardian.com/science/2010/nov/13/inventors-idea-regret|title=Whose bright idea was that?|date=13 November 2010|location=London|author=Simon Hattenstone, The Guardian|access-date=2010-11-13}}</ref> The two-wheel X-1 was to have been available in July 2011 at the price of £595,<ref>{{Cite web|url=http://www.gizmag.com/sinclair-x1-pedal-electric/16838/|title=Sir Clive Sinclair's X-1 pedal-electric hybrid|last=Coxworth|first=Ben|date=5 November 2010|website=www.gizmag.com|access-date=5 February 2017}}</ref><ref>{{cite web|url=http://www.sinclairzx.com/spec-x-1.html|title=Sinclair Research|author=Sinclair Research - Sir Clive Sinclair|access-date=13 October 2015|url-status=dead|archive-url=https://web.archive.org/web/20151003092254/http://www.sinclairzx.com/spec-x-1.html|archive-date=3 October 2015|df=dmy-all}}</ref> but failed to reach production.<ref>{{Cite news|url=http://www.edn.com/electronics-blogs/benchtalk/4437901/Sir-Clive-Sinclair-interview--ZX-Spectrum-relaunched-for-retro-gameplay|title=Sir Clive Sinclair interview|last=Dunn|first=Michael|date=8 December 2014|newspaper=EDN|access-date=5 February 2017|language=en}}</ref>