Received this message from Chris Kapral. Thanks Chris, very relevant info to share.
".. Re "Front Panels", 5/12/17:
GTE Comp-Acct, based in Cincinnati, made a system for restaurants around 1975 based on the AMD2901 processor. It controlled a bunch of cash registers and did accounting and inventory functions for the restaurant. I worked on it briefly in 1976. I remember seeing them in the Burger King in Redwood City, CA into the 1980s. I never saw the panel shown in the picture. ..