SU149262A1 - Device for finding faulty electronic digital computer components - Google Patents

Description

The current methods of detecting faults in electronic computers take a long time, and the known devices designed for this purpose, consisting of a clock counter, a comparison circuit, a distribution counter and control registers, do not automate the process of setting up and repairing machines. .

The proposed device differs from the known ones in that it simplifies and automates the process of finding errors during the repair and adjustment of electronic machines. This is achieved by connecting the tested node through a switching unit with a comparison circuit, the second input of which is connected to the reference nodes, and the switching unit is connected to a distribution counter, which serves to control the serial connection of the tested nodes.

The drawing shows a block diagram of the proposed device

The principle of operation of the device is as follows. All the tested equipment is divided into specific groups - nodes (shift registers, counters, receiving and transmitting registers, adder, transmission lines, etc.) and for each group developed its own method and scheme of testing. In the proposed device, all the schemes are combined so that it was possible to make an automatic transition from checking one node to checking another.

The device works as follows.

The trigger pulse removes from the distribution counter / signal that determines the number of the node to be checked, i.e. the counter / controls the serial connection of the tested nodes. This signal triggers in the control control unit 2 a corresponding test circuit, which sends out control pulses to the node under test, and at the end of the test, issues a pulse to block 5 - a comparison circuit. At the same block, simultaneously with the pulse received from block 2, a pulse is received from reference node 4, by the coincidence of both pulses, it is judged that the node being checked is in good condition.