AUTOMATIC SYSTEM FOR DIAGNOSTICS OF DIGITAL DEVICES Russian patent published in 1997 - IPC

FIELD: computer engineering, instruments, in particular, detection of faults in digital instruments. SUBSTANCE: device has personal computer 1, interface unit 10, contact unit 21, tested article 22. First decoder 8 and programmable parallel input- output port 9 are introduced to computer 1. Interface unit 10 has bus generators unit 11, address bus 12, data bus 13 and control bus 14, second decoder 15, selector 16, three groups of programmable input- output ports 17, 18, 19 ad N buffer elements 20.1-20.N. This results in possibility to transmit test actions to tested article and read its responses in n-bit parallel code (where n is bit-length of input-output port of computer). EFFECT: increased speed, increased reliability. 2 dwg