MCS-4
The MCS-4 (Micro-Computer Set-4) or 4000 Series or Busicom Chip Set was a family of 4-bit microprocessor chipsets developed by Intel. The entire chipset was made of four individual chips, including the 4004 CPU which became the first commercial microprocessor. MCS-4 was completed by March 1971, entered production in June, and introduced into the market on November 15, 1971.
| Part | Description | Photo |
|---|---|---|
| 4001 | ROM |   |
| 4002 | RAM |   |
| 4003 | shift register |   |
| 4004 | MPU |
|
| 4008 | Address latch | |
| 4009 | I/O Interface |  |
White Ceramic - Grey Trace
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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White Ceramic - Normal
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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White Ceramic - Half Round Key
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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White Ceramic - Black Dot
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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White Ceramic - 5 Series Left Grounding
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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White Ceramic - 5 Series Right Grounding
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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Grey Ceramic
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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Plastic
| C4001 | C4002-1 | C4002-2 | C4003 | C4004 |
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Yellow Print
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Black
Grey
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Black
Grey
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Black
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Black
|
Plastic MCS-4 - Full Set
