Revision as of 02:32, 11 February 2024 edit Beland (talk \| contribs) Autopatrolled, Administrators 259,155 edits m "Micro" to "mu" per MOS:UNITSYMBOLS and https://www.unicode.org/reports/tr25/tr25-6.html#_Toc25 (and other special character cleanup) (via WP:JWB) ← Previous edit		Revision as of 15:02, 30 April 2024 edit undo Comp.arch (talk \| contribs) Extended confirmed users 41,494 edits low-pin-count w/hyphens like at https://www.eetimes.com/flash-storage-alternatives-for-the-low-pin-count-lpc-bus/?_ga Tag: 2017 wikitext editor Next edit →
Line 10: == History == [[File:Alps remote control BHR970001B - NEC D63GS-7525.jpg\|thumb\|20-pin PSOP -– NEC D63GS: a 4-bit microcontroller for [[infrared remote control]] transmission]] [[File:Intel C4004 greytraces CPU.jpg\|thumb\|left\|16-pin DIP -– Intel C4004]] [[File:Olympia CD700 Desktop Calculator. 1971.Microprogrammable Arithmetic Processor System Devices (MAPS).jpg\|thumb\|Olympia CD700 Desktop Calculator using the National Semiconductor MAPS MM570X [[bit-serial]] 4-bit microcontroller]] [[File:Alps remote control BHR970001B-7517.jpg\|thumb\|left\|Infrared remote control PCB -– an [[infrared remote control]] transmitter controlled by a NEC D63GS 4-bit microcontroller]] A 4-bit processor may seem limited, but it is a good match for calculators, where each decimal digit fits into four bits.<ref name="Shirriff_TMS1000" /> Line 55: * [[Intel 4040]] (discontinued 1981) * [[TMS 1000]] (the first high-volume commercial microcontroller, from 1974, after Intel 4004; now discontinued<!-- for sure, and when?-->) * [[Atmel]] [[MARC4]] core<ref name="Atmel_MARC4_Image" /><ref name="Atmel_MARC4_Product" /> – (discontinued because of <!--Reason for EOL: -->Low demand. "Last ship date: 7 March 2015"<ref name="Atmel_EOL" />) * [[Samsung]] S3C7 (KS57 Series) 4-bit microcontrollers (RAM: 512 to 5264 nibbles, 6 MHz clock) * [[Toshiba]] [[TLCS-47]] series Line 83: == See also == * [[GMC-4]] * [[Hitachi HD44780 LCD controller]] * Intel's [[Low Pin Count\|LPC]] (low-pin-count) bus/interface for 4-bit communication ** Its successor for modern computers, Intel's [[Enhanced Serial Peripheral Interface]] (eSPI), allows 1-bit, 2-bit, orand 4-bit communication == References ==

4-bit computing: Difference between revisions