Abstract: In an electronic system, such as a digital data processing system, comprising a number of circuit boards, each circuit board being of a particular functional type and also uniquely identifiable by a manufacturing revision number, there is provided a status detection circuit for polling various programmable status information from the board, including a unique board identity number and the manufacturing revision number. The status detection circuit includes a microcomputer (60, FIG. 2) on each board 50. The data inputs of the microcomputer are responsive to a unique combination of switches (e.g., 42) representative of the manufacturing revision number. Other microcomputer inputs are responsive to a unique combination of edge connectors (e.g., 47) for uniquely identifying the particular board in the system. Another microcomputer input is responsive to an on-board status indicator, such as an LED.