TTL-Level Digital I/O Board for ISA

This product is PC/AT which performs un-isolating type TTL level input and output, and an interface board for the compatible machines. This board can be used being able to mount in the expansion slot or I/O extension unit of the main part of a personal computer, and can be outputted and inputted a maximum of 32 points on this one board.

	A high-speed response is possible at TTL level input and output.
	Four groups and the digital signal of 32 points can be inputted by making eight points into one group.
	Four groups and the digital signal of 32 points can be outputted by making eight points into one group.
	Four of 32 input signals can be used as an interruption input. Moreover, the edge of the input signal which generates interruption can also be chosen.
	The option function other than a general-purpose input-and-output function is prepared.