Desk-top electronic computer with MOS circuit logic

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.