Detecting improper operation of a digital data processing appara

Details Detecting improper operation of a digital data processing appara Detecting improper operation of a digital data processing appara

1985-06-10

1986-08-26

Thomas, James D.

Excavating

364900, 358147, G11C 2900, G06F 1100

Patent

active

046086900

ABSTRACT:
Improper operation of a digital data processing apparatus is detected by applying a predetermined pattern of test digits to a data input of the apparatus and determining whether the pattern of digits provided at the data output of the apparatus in response to the application of the predetermined pattern of test digits to the data input is the same as the pattern that would be provided at the data output if the apparatus were operating properly.

REFERENCES:
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patent: 4159480 (1979-06-01), Tachi
patent: 4195770 (1980-04-01), Benton et al.
patent: 4233668 (1980-11-01), Yamaguchi et al.
patent: 4286281 (1981-08-01), Suzuki
patent: 4293950 (1981-10-01), Shimizu et al.
patent: 4308557 (1981-12-01), Dieterich
patent: 4335457 (1982-06-01), Early
patent: 4392159 (1983-07-01), Lemoine et al.
IBM Technical Disclosure Bulletin, vol. 24, No. 2, Jul. 1981, "RAM Tester Calibration Check" p. 965 by T. Hwang.

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