Electronic computation circuit for addition and subtraction - contains two input shift registers with crossover feedback case dependent pulse cycle stage

摘要

The electronic computation circuit forms its results numbers serially. It contains two input shift registers with crossover feedback and a circuit which performs either one pulse cycle in one case to drive the corresp. shift register or two pulse cycles in succession for the alternative case. The circuit is designed so that no switch-off pulse is produced after the first pulse cycle if the second pulse cycle is due to be performed. The pulse circuit (17) consists of two stages, each with a pulse reversal circuit. USE/ADVANTAGE - Is suitable only for addition and subtraction and has improved pulse circuit compared to earlier version.