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{{hitachi title|HMCS-4}}
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The '''Hitachi HMCS-4''' (aka '''HMCS-4''') chipset was an [[Intel MCS-4]] clone; a set of integrated circuits that were used together to build a complete computer system. The chipset included a ROM chip, a RAM chip, shift register, and a 4-bit [[microprocessor]] called the [[HD35404]]. The chipset was first produced first quarter of 1975.
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{{ic family
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| title            = Hitachi HMCS-4
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| image            = <!-- Image representation of the IC family, e.g. "MCS-4.jpg"  -->
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| caption          = <!-- description of the image                                  -->
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| developer        = Hitachi
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| manufacturer      = Hitachi
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| type              = microprocessors
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| production start  = 1975
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| arch              = 4-bit
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| isa              = 4004
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| word              = 4 bit
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| proc              = <!-- process, e.g. "8 μm"                                      -->
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| tech              = pMOS
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| clock            = <!-- clock speed, e.g. "740 kHz"  IF RANGE, USE PARAM BELOW!  -->
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| clock min        = <!-- clock min speed, e.g. "200 MHz"                          -->
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| clock max        = <!-- clock max speed, e.g. "900 MHz"                          -->
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| package          = <!-- package, e.g. "DIP16"                                    -->
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| package 2        = <!-- package, e.g. "DIP16"                                    -->
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| package 3        = <!-- package, e.g. "DIP16"                                    -->
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| package 4        = <!-- package, e.g. "DIP16"                                    -->
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| package 5        = <!-- package, e.g. "DIP16"                                    -->
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}}
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The '''HMCS-4''' was a [[microprocessor family|family]] of {{arch|4}} multi-chip [[microprocessor]] manufactured by [[Hitachi]]. It is unknown if this was a licensed 2nd source or a faithful clone of the {{intel|MCS-4|Intel MCS-4}}. The complete system was made of 4 chips. The chipset included a [[ROM]] chip, a [[RAM]] chip, [[shift register]], and a [[4-bit architecture|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 used an existing ROM chip.
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== Members ==
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{| class="wikitable"
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! colspan="2" | Family Members
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|-
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! Part !! Description
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|-
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| {{hitachi|HD35404}} || 4-bit CPU
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|-
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| {{hitachi|HN35600}} || ROM
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|-
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| {{hitachi|HD35402}} || RAM
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|-
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| {{hitachi|HD35403}} || Shift Register
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|}
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== Documents ==
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* [[:File:hitachi electronics brochure, 1976.pdf|Hitachi electronics catalog]], 1976
  
 
== See also ==
 
== See also ==
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* [[Intel 4004]]
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* {{intel|mcs-4/4004|Intel 4004}}
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* [[Intel MCS-4]]
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* {{intel|MCS-4|Intel MCS-4}}
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* [[Hitachi HD35404]]
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* {{hitachi|HD35404}}
  
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[[Category:1971 microprocessors]]
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[[Category:1975 microprocessors]]
 
[[Category:4-bit microprocessor]]
 
[[Category:4-bit microprocessor]]
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{{stub}}

Latest revision as of 23:54, 18 May 2016

Hitachi HMCS-4
no photo (ic).svg
Developer Hitachi
Manufacturer Hitachi
Type microprocessors
Production 1975
Architecture 4-bit
ISA 4004
Word size 4 bit
0.5 octets
1 nibbles
Technology pMOS

The HMCS-4 was a family of 4-bit multi-chip microprocessor manufactured by Hitachi. It is unknown if this was a licensed 2nd source or a faithful clone of the Intel MCS-4. 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 used an existing ROM chip.

Members[edit]

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

Documents[edit]

See also[edit]


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Facts about "HMCS-4 - Hitachi"
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designerHitachi +
full page namehitachi/hmcs-4 +
instance ofmicroprocessor family +
instruction set architecture4004 +
main designerHitachi +
manufacturerHitachi +
nameHitachi HMCS-4 +
technologypMOS +
word size4 bit (0.5 octets, 1 nibbles) +