Burn-in test system for electronic apparatus

Details Burn-in test system for electronic apparatus Burn-in test system for electronic apparatus

1978-01-19

1979-11-20

Malzahn, David H.

Boots, shoes, and leggings

364900, 354900, G06F 312, G06F 1106

Patent

active

041752864

ABSTRACT:
An electronic apparatus having a keyboard and an output device, such as a thermal printer unit. The apparatus, including its printer unit, is burn-in tested by an electronic system built into the apparatus. The system includes a memory, a circuit for storing a preselected or predetermined alphanumeric code in the memory and a circuit for repetitively causing the printer unit to print the contents of the memory. A delay system may be incorporated which causes the apparatus to enter a wait mode between printing operations. The period of time that the system is in the wait mode may be either a fixed duration or of a selected duration. In the embodiment disclosed, the apparatus is an electronic calculator.

REFERENCES:
patent: 3604906 (1971-09-01), Hunter et al.
patent: 3753226 (1973-08-01), Schnurmann et al.
patent: 3839630 (1974-10-01), Olander, Jr. et al.
patent: 3909802 (1975-09-01), Cassarino, Jr. et al.
patent: 3921142 (1975-11-01), Bryant et al.

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