Arithmetic circuit for addition, subtraction, multiplication and division - uses single up=down counter in place of two counters in shift-register decimal point controller

摘要

The arithmetic circuit is arranged as in P4115226.3. A special circuit (75) is used which only has a single up/down counter instead of two up-counters. The special circuit is pref. the circuit according to P4120742.4. The arithmetic circuit includes a main circuit and an auxiliary shift register with a main controller and combined decimal point and shift register controller (60).