Early
Electronic
Calculator
Canon 161 Calculator
Schematic

Note: Currently, only pages 1 to 6 are online, contact to obtain more.

Section Page
Title & Contents 1
Notes 2
Block Diagram 3
Modules (Gates and Display) 4
Modules (Flip-Flops) 5
Timing 6
Keyboard 7
Control (Flag Registers 1) 8
Control (Flag Registers 2) 9
Control (State Machine) 10
A & B Counters 11
Arithmetic and ACC Register 12
IR Register 13
ME Register, Shift Pulse Gens & Zero Gates 14
PC (Point) Counter 15
DC (Digit) Counter 16
Power Supply 17
Timing Diagram 18
Connectors Nbb1p & Nbb2p 19
Connectors Nbb3p & Nbb4p 20
Modern Controller/Monitor Unit (MCMU) 21

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