Abstract: There is disclosed herein an apparatus for computerized real time verification of the correctness of pin locations for wire wrap connections made by human operators in constructing or upgrading computer backplanes. A suitably programmed microprocessor operates from a data base consisting of the information from a wire list drawing fed into the microprocessor's memory from a cassette tape record. The microprocessor is linked to the backplane to be verified and to the hand operated wire wrap gun serving as the test probe by a uniquely designed Wire Check System Interface. Both wire adds and wire deletes may be made.

Abstract: There is disclosed herein an apparatus for verifying the correct placement of a wire wrap tool on a wire wrap pin in an array of pins. An outside source of pin and condition data such as a human operator operating switches or a mechanical sequential state machine or a hand wired logic sequential state machine supplies binary data indicating the correct pin and the expected electrical condition to be found on the correct pin. A wire check system interface means in combination with a wire wrap tool, a strip switch and a number of HDMUG logic boards then subject the correct pin to the expected electrical condition and compare the electrical condition on the pin actually touching the wire wrap tool to the expected electrical condition and signals the correctness or incorrectness of placement of the wire wrap tool.