The Radio Shack Model 4P is the POS terminal for the store. It is used every day. Over the years many modifications have been made to it, such as the 3.5" floppy disk seen in the picture. It is based on a Z-80 processor with 64k (yes 64 "k" not 64 "MB") of RAM. It is a fast-booting, reliable system (remember the good old days?), and there are no plans to replace it.
Radio Shack Model 4P Resources