Modclk

This document is a program library write-up for "MODCLK," a test program for the KW-12 clock. Written in 1970 by Stephen J. Mayor at the Medical College of Ohio at Toledo, the program uses sense switches to set specific clock frequencies (ranging from 100 Hz to 400 kHz). When a switch is pressed, the teletype bell rings at a corresponding rate to verify the clock's operation. The document includes the full source code written in the LAP6-DIAL language, along with a symbol table and a list of abbreviations used in the program.