Card-reader integrated circuit tester

Details Card-reader integrated circuit tester Card-reader integrated circuit tester

Filed on

1975-09-26

Date issued

1977-10-11

Examiner

Mullins, James B.

Patent Class

Amplifiers

SubClass

With amplifier condition indicating or testing means

Other Related Categories

235 617R, 324 73R, H03F 2100, G01R 1900

Type

Patent

Status

active

Patent number

040538443

Description

ABSTRACT:
A method and apparatus are described for testing electronic circuit devices for proper operation and parameter tolerance levels. The apparatus includes a card reader for extracting from a plurality of programming cards comparison values against which actual parameter values of a device under test are to be compared; a memory for storing a plurality of comparison values for each parameter of the device to be checked, which different comparison values represent different tolerance levels or bins for the device; test circuitry for measuring the actual values of the parameters of a device under test; a comparator for comparing each of such actual values with the various tolerance comparison values for the same; and a visual display screen for displaying the results of the comparison. The method includes marking a decimal numeric Hollerith code on the programming cards with the comparison values and then feeding the same through a card reader to the memory for later recall of such comparison values as needed for comparisons.

REFERENCES:
patent: 3219927 (1965-11-01), Topp et al.
patent: 3302109 (1967-01-01), Jones
patent: 3522532 (1970-08-01), McCoy
patent: 3581074 (1971-05-01), Waltz
patent: 3631229 (1971-12-01), Bens
patent: 3649910 (1972-03-01), Vinsani
patent: 3673397 (1972-06-01), Schaefer

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