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Desk-top electronic computer with MOS circuit logic

  • US 3,939,452 A
  • Filed: 07/11/1973
  • Issued: 02/17/1976
  • Est. Priority Date: 07/14/1972
  • Status: Expired due to Term
First Claim
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1. In a desk-top electronic computer disposed on at least three semiconductor chips:

  • input-output means disposed on at least the first of the three semiconductor chips for receiving data signals applied thereto and for feeding data signals therefrom to the remaining semiconductor chips;

    processing means receptive of data signals fed from said input-output means for processing the data signals, said processing means including arithmetic means disposed on the second semiconductor chip and receptive of data signals from said input-output means for performing arithmetic operations thereon, a memory instruction register and a memory address register both disposed on the first semiconductor chip, control means disposed on the third semiconductor chip and receptive of data signals from said input-output means for controlling the arithmetic means to perform selected arithmetic operations and comprising a read-only memory having addressable microinstructions stored therein and circuit means disposed on the three semiconductor chips for transferring over a first single signal conductor between the three semiconductor chips both the data signals from the memory address register to address the read-only memory and the data signals of the addressed microinstruction from the read-only memory to the memory instruction register; and

    timing means disposed on the three semiconductor chips and interconnected by a second single signal conductor for synchronizing the data signal flow on the three semiconductor chips.

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