Editing ZX Spectrum (section)

=== ZX Spectrum+ {{anchor|plus}}===
[[file:ZX Spectrum+.jpg|thumb|ZX Spectrum+ (Dimensions (mm): 319×149×38 (W×H×D))<ref name=HCHOF />]]

Development of the ''ZX Spectrum+'' began in June 1984,{{sfn|Denham|1984b|p=104}} and was released on 15 October that year at £179.<ref name="New Spectrum">{{Cite journal |date= December 1984 |title= News: New Spectrum launch |journal= [[Sinclair User]] |issue= 33 |page= 11 |url= http://www.sincuser.f9.co.uk/033/news.htm |access-date= 19 August 2006 |url-status= dead |archive-url= https://web.archive.org/web/20060924094040/http://www.sincuser.f9.co.uk/033/news.htm |archive-date= 24 September 2006 }}</ref><ref name='hcw231084'>{{cite magazine|title=Spectrum surprise!|magazine=Home Computing Weekly|issue=85|publisher=Argus Specialist Publications|date=23 October 1984|page=1|url=https://spectrumcomputing.co.uk/page.php?issue_id=2651&page=1|access-date=23 May 2021|archive-date=24 September 2020|archive-url=https://web.archive.org/web/20200924170531/https://spectrumcomputing.co.uk/page.php?issue_id=2651&page=1|url-status=dead}}</ref><ref name="PSZX+">{{cite web |url=http://www.nvg.ntnu.no/sinclair/computers/zxspectrum/specplus.htm |work=Planet Sinclair |last=Owen |first=Chris |access-date=21 August 2006 |title=ZX Spectrum+ |url-status=live |archive-url=https://web.archive.org/web/20110903053833/http://www.nvg.ntnu.no/sinclair/computers/zxspectrum/specplus.htm |archive-date=3 September 2011 }}</ref> It was assembled by AB Electronics in [[South Wales]] and [[Samsung]] in South Korea.<ref name="Goodwin-145" /> This 48 KB Spectrum introduced a new [[Sinclair QL|QL]]-style case with an injection-moulded keyboard and a reset button that functions as a switch shorting across the CPU reset capacitor. Electronically, it was identical to the previous 48&nbsp;KB model. The machine outsold the rubber-key model two to one,{{sfn|Denham|1984b|p=104}} however, some retailers reported a failure rate of up to 30%, compared with a more typical 5–6% for the older model.<ref name="PSZX+" /> In early 1985, the original Spectrum was officially discontinued, and the ZX Spectrum+ was reduced in price to £129.{{sfn|Bourne|1985a|p=7}}