It replaces six 74F646s and four 74F245s chips used in the original A3000 design.
Early System 1 boards and cartridge boards used large numbers of 7400 series TTL chips.
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For small-scale logic, designers now use prefabricated logic gates from families of devices such as the TTL 7400 series by Texas Instruments and the CMOS 4000 series by RCA, and their more recent descendants.