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The Fairchild PPS-25 was a family of 4-bit multi-chip microcontrollers developed by Fairchild in 1972. While there is no definitive starting production date available, some older books state that the chip was first produced in first quarter of 1971, ahead of the Intel 4004.[1]

Family Members
Part Description
3805 ALU
3806 Control and timing unit

References

  1. ↑ Jack Belzer, Albert G. Holzman, Allen Kent (Jul 1, 1978). Encyclopedia of Computer Science and Technology: Volume 10 - Linear and Matrix Algebra to Microorganisms: Computer-Assisted Identification. page 401


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