Digital electronic circuit for addition and subtraction of 5211 code - has registers coupled to separate adder and subtraction units with outputs generated by register stages

摘要

The circuit has values entered into registers that are coupled to the inputs of an adder (4) and a subtractor (5) circuit. The output of the circuits is received by a logic circuit that has a results register (3) and an auxiliary register (25) to control the display. The addition or subtraction processes are controlled by a logic circuit that produces control signals for transfer and selection of functions.