6 Apr
1998
6 Apr
'98
8:16 p.m.
Generally for
the old machines we talk about on this list, the chip type
code is easy to differentiate from the date code, because of the
prevalence of 7400-series TTL chips. Any 74xx or 54xx number will be the
chip type, while the other number will be the date code.
Until you get a machine built in 1974 :-). It's happened to me, it's
mentioned in 'The Art of Electronics', and it's doubtless happened to
others here.