4-bit computing
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4-bit computing is the use of computer architectures in which integers and other data units are 4 bits wide. 4-bit central processing unit and arithmetic logic unit architectures are those that are ba
20-pin PSOP – NEC D63GS: a 4-bit microcontroller for infrared remote control transmission
16-pin DIP – Intel C4004
Infrared remote control PCB – an infrared remote control transmitter controlled by a NEC D63GS 4-bit microcontroller
National Semiconductor COP410L, a low-end 4-bit microcontroller. 512 bytes of ROM in upper left corner, 128 bits of RAM in upper right corner. Click to zoom.
EM Microelectronic
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EM Microelectronic, based in Marin, La Tène near Neuchâtel in Switzerland, is a developer and semiconductor manufacturer specialized in the design and production of ultra low power, low voltage integr
4-bit computing
…largely obsolete, i.e. CPUs supporting 4-bit as the maximum size, or 4-bit data bus are no longer available, but 4-bit microcontrollers, such as the EM Microelectronic EM6580, are still available as of 2026. 4-bit processors were widely used in electronic calculators and other roles where decimal math was used, like…
EM Microelectronic Headquarter in Marin
EM Microelectronic US, Colorado Springs CO