Data input or output apparatus incorporating functional testing

Details Data input or output apparatus incorporating functional testing Data input or output apparatus incorporating functional testing

1981-06-15

1984-08-07

Wise, Edward J.

Boots, shoes, and leggings

364483, G06F 1520, G01N 1902

Patent

active

044647220

ABSTRACT:
For functional testing, all electromechanical elements of a data input or output apparatus are individually and successively activated. The current supplied by a power supply is measured at least at one instant and the measurement value is compared with a reference value. Thus, the power supply lead need include only a (possibly switchable) measuring element and a customary A/D converter and possibly a measuring range controller, the further functional testing being realized by means of the digital units already present. Due to the small number of elements on the one hand, the reliability of the apparatus is not affected to any significant degree, while on the other hand the functional testing is thus realized in a very inexpensive manner.

REFERENCES:
patent: 3839628 (1974-10-01), Higgins et al.
patent: 4035621 (1977-07-01), Kemp
patent: 4144578 (1979-03-01), Mueller et al.
patent: 4184205 (1980-01-01), Morrow
patent: 4189778 (1980-02-01), Vogel
patent: 4376298 (1983-03-01), Sokol et al.

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