4-bit computing: Difference between revisions

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<ref name="RenesasPD67">{{Cite web|url=http://documentation.renesas.com/doc/DocumentServer/U14935EJ2V1DS00.pdf|title=μPD67, 67A, 68, 68A, 69 4-bit single-chip microcontroller for infrared remote control transmission|website=documentation.renesas.com|archive-url=https://web.archive.org/web/20160106205219/http://documentation.renesas.com/doc/DocumentServer/U14935EJ2V1DS00.pdf|archive-date=2016-01-06}}</ref>
<ref name="Haskell_MC">{{cite web |url=http://cse.secs.oakland.edu/haskell/CSE171/Lectures/Fall2004/L12.2%20Microcontrollers.ppt |author-last=Haskell |author-first=Richard |title=Introduction to Digital Logic and Microprocessors (Lecture 12.2) |access-date=2014-02-11 |archive-url=https://web.archive.org/web/20140222063433/http://cse.secs.oakland.edu/haskell/CSE171/Lectures/Fall2004/L12.2%20Microcontrollers.ppt |archive-date=2014-02-22 |url-status=dead}}</ref>
<ref name="Atmel_MARC4_Image">{{cite web |url=http://www.atmel.com/Images/doc4747.pdf |archive-url=https://web.archive.org/web/20141215021454/http://www.atmel.com/Images/doc4747.pdf |archive-date=2014-12-15 |title=MARC4 4-bit Microcontrollers – Programmer's Guide |publisher=[[Atmel]] |access-date=2014-01-14 |url-status=dead}}</ref>
<ref name="Atmel_MARC4_Product">{{cite web |url=http://www.atmel.com/products/MARC4/ |title=MARC4 4-Bit Architecture |publisher=[[Atmel]] |archive-url=https://web.archive.org/web/20090531214448/http://atmel.com/products/MARC4/ |archive-date=2009-05-31 |url-status=dead}}</ref>
<ref name="Atmel_EOL">{{cite web |url=http://www.atmel.com/images/he140901.pdf |title=Product End-of-Life (EOL) Notification |date=2014-03-07 |publisher=[[Atmel]] |archive-url=https://web.archive.org/web/20160807174435/http://www.atmel.com/images/he140901.pdf |archive-date=2016-08-07 |url-status=dead}}</ref>
<ref name="Renesas_uPD6P9">{{Cite web|url=http://documentation.renesas.com/doc/DocumentServer/U15144EJ1V1DS00.pdf|title=μPD6P9 4-bit single-chip microcontroller for infrared remote control transmission|website=documentation.renesas.com|archive-url=https://web.archive.org/web/20160327192018/http://documentation.renesas.com/doc/DocumentServer/U15144EJ1V1DS00.pdf|archive-date=2016-03-27}}</ref>
<ref name="Renesas_uPD17240">{{Cite web|url=http://documentation.renesas.com/doc/DocumentServer/U15002EJ1V1DS00.pdf|title=μPD17240, 17241, 17242, 17243, 17244, 17245, 17246 4-bit single-chip microcontrollers for small general-purpose infrared remote control transmitters|website=documentation.renesas.com|archive-url=https://web.archive.org/web/20160327182841/http://documentation.renesas.com/doc/DocumentServer/U15002EJ1V1DS00.pdf|archive-date=2016-03-27}}</ref>