A Special Computer Interface Developed by Faculty Teamwork.

For research in audiovideo pattern recognition, and for experimental modelling of closed-loop hybrid systems, it is found that any one of several different surplus computers can be modified in such a way that input and output data and control signals are electrically accessible. Many of the newer and more expensive computers include an interface unit for this purpose. Older machines, available at lower cost, can be upgraded with the addition of a carefully designed interface unit. The interface unit described herein was designed to fit the IBM 1620-Model II computer.