Electronic digital circuit for addition or subtraction of coded numbers - has facility for multiple addition and subtraction operations with results stored in separate register

摘要

The electronic circuit has input stages in the form of shift register that are controlled by pulses generated by a counter based control circuit. The circuit is controlled such that multiple addition or subtraction operations can be made. Results generated are stored in a separate register (55) that is organised in groups of 4 stages (1-8). The register is controlled by a counter based unit. ADVANTAGE - Simplified circuitry.