Before the evolution of CAD/CAM (Computer Aided Design/Computer Aided Manufacturing), CNC machines used Numerical Control programming that involved various codes to create a language understood by ...

On Wednesday, the Association for Computing Machinery, the world’s largest society of computing professionals, said Dr. Aho and Dr. Ullman would receive this year’s Turing Award for their work ...

In addition to G- and M-codes, the CNC program included distances, feed rate, and direction of travel for each machine axis. The speed of the spindle rotation (RPM) was controlled by an S-code.