Electronic multiplier circuit - has read-only memory used for double decade binary number coding

摘要

The electronic multiplier circuit whose main component consists of an adder circuit uses a read only memory in a conventional manner for encoding double decade binary numbers. The multiplier circuit contains a control circuit with a driving output for each product number from 1x1 to 9x9. The control circuit is combined with a read-only memory which has inputs for the products of those numbers and 8 outputs for two four-place binary numbers for each product. For equal product numbers the drive circuit conductors are connected in parallel, but for a certain type of circuit no conductors are connected in parallel and the read-only memory is configured accordingly.