EPROM programmer

Details EPROM programmer EPROM programmer

1984-12-27

1987-06-23

Trafton, David L.

Registers

Systems controlled by data bearing records

235454, 235474, 365201, G06F 1520

Patent

active

046755136

ABSTRACT:
When supply voltage is first supplied to an EPROM programmer, the system is placed in an erase check mode. An EPROM is attached to the device, and an erase check switch is depressed. If there is no abnormality in the EPROM, a ring counter operates to change the system to a write mode. A program sheet is inserted into the device from one side up to a predetermined position and taken out from the other side. After that, writing data into a RAM, programming of the EPROM dependent on the data in the RAM, and verify checking of the programmed EPROM are sequentially operated automatically by output signals from the ring counter. If an abnormality is detected in the erase check mode or verify check mode, the abnormality is indicated and the ring counter is reset to return the initial state. Thus, the EPROM can be replaced for re-programming operation.

REFERENCES:
patent: 4363960 (1982-12-01), Kuze
patent: 4442345 (1984-04-01), Mollier et al.
patent: 4456967 (1984-06-01), Kuze

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