PROM writer having check sum function

Details PROM writer having check sum function PROM writer having check sum function

1990-07-06

1993-01-19

Atkinson, Charles E.

Excavating

371 691, G06F 1110, G11C 2900

Patent

active

051812061

ABSTRACT:
The present invention relates to a PROM writer which functions to compare the first check sum value of the first or reference data read out a master ROM with the check sum values of the second and subsequent data from the master ROM. The data read out of the master ROM is written into the plurality of the blank ROMs and the present invention prevents wrong data from being written into the blank ROMs based on a failure of a successful comparison between the first check sum value and the second and subsequent check sum values.

REFERENCES:
patent: 3582880 (1971-06-01), Beausoleil
patent: 4133504 (1979-01-01), Dobler et al.
patent: 4355390 (1982-10-01), Hellwig et al.
patent: 4404677 (1983-09-01), Grande et al.
patent: 4519077 (1985-05-01), Amin
patent: 4646307 (1987-02-01), Nishimura
patent: 4698808 (1987-10-01), Ishii
patent: 4727544 (1988-02-01), Brunner et al.
patent: 4807186 (1989-02-01), Ohnishi et al.
patent: 4959836 (1990-09-01), Berard et al.

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