engineeringhistory:

Tom Frisina with a TOPO model personal robot, 1983. The robot was designed by Androbot Inc. to perform every day tasks around the house. TOPO did not contain an internal microprocessor and could receive commands through an external PC such as an Apple II. TOPO retailed for $795 and sold approximately 1,000 copies before it was replaced by the BOB in 1984.