The Hitachi HMCS-4 chipset was an Intel MCS-4 2nd source. The complete system was made of 4 chips. The chipset included a ROM chip, a RAM chip, shift register, and a 4-bit microprocessor. The chipset was first produced first quarter of 1975. Hitachi appear to have used the same numbering system as Intel did for the family with the exception of the ROM chip which uses an existing ROM chip.

Family Members
Part	Description
HD35404	4-bit CPU
HN35600	ROM
HD35402	RAM
HD35403	Shift Register

Documents

• Hitachi electronics catalog, 1976

See also

• Intel 4004
• Intel MCS-4
• HD35404

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