Semiconductor & Computer Engineering
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Difference between revisions of "hitachi/hmcs-4"
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| − | The '''HMCS-4''' was a {{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. | + | 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. |
== Members == | == Members == | ||
Latest revision as of 23:54, 18 May 2016
| Hitachi HMCS-4 | |
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| |
| 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]
 |
This article is still a stub and needs your attention. You can help improve this article by editing this page and adding the missing information. |
Facts about "HMCS-4 - Hitachi"
| designer | Hitachi + |
| full page name | hitachi/hmcs-4 + |
| instance of | microprocessor family + |
| instruction set architecture | 4004 + |
| main designer | Hitachi + |
| manufacturer | Hitachi + |
| name | Hitachi HMCS-4 + |
| technology | pMOS + |
| word size | 4 bit (0.5 octets, 1 nibbles) + |