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remove maint tag, issue on talk page appears to be bogus per electronics project talk. |
MC14500B production "was stopped years ago" - but "More than 10 available" on Ebay.. Could not find any WDR-1 anywhere and do not know any other 1-bits.. |
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{{Distinguish|bit|One instruction set computer}}
{{Computer architecture bit widths}}
A '''1-bit''' [[computer architecture]] is an [[instruction set architecture]] for a processor that has [[datapath]] widths and [[processor register|data register]] widths of 1 bit (1/8 [[Octet (computing)|octet]]) wide.
An example of a 1-bit architecture that was actually marketed as a CPU is the [[Motorola MC14500B]] Industrial Control Unit.<ref>{{cite web|publisher=[[Motorola]]|title=MC14500B Industrial Control Unit. Semiconductor Technical Data, Rev. 3|url=http://www.brouhaha.com/~eric/retrocomputing/motorola/mc14500b/mc14500brev3.pdf|year=1995|accessdate=August 1, 2012}}</ref> There are also several design studies for 1-bit architectures in academia, and corresponding 1-bit logic can also be found in programming.
Most [[calculator]]s
Other examples of 1-bit architectures are [[programmable logic controllers]].
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* write the value in the 1-bit register to output 1.
1-bit CPUs can be considered obsolete now, not many kinds have been produced (MC14500B and WDR-1 known) and none known to be available in any computer component store (except, {{as of|2014|lc=y}}, a few on Ebay<ref>http://www.ebay.com/itm/Motorola-IC-MC14500B-MC14500BCL-100-NEW-/320837692605</ref>).
==References==▼
▲== References ==
{{Reflist}}
== External links ==
* [http://www.old-computers.com/museum/computer.asp?st=1&c=834 WDR-1-Bit Computer]
{{CPU technologies}}
[[Category:Data unit]]
{{computer-hardware-stub}}
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