Tek 155-0021-01 timer chip

Paul Amaranth

I just had to order one of these to fix the readout display
on my 7904.

If anyone is looking for one, Tucker seems to be the last one
with any stock on hand at a reasonable price ($8.95 ea).

Has anyone ever seen a block diagram of the chip internals?
That box on the schematic isn't a lot of help if you have
to reverse engineer it.

Probably could replace the entire display board with a PIC,
some glue logic and a handful of transistors. Another neat
project I don't have time for.

Paul Amaranth, GCIH | Rochester MI, USA
Aurora Group, Inc. | Security, Systems & Software
paul@... | Unix & Windows

Join TekScopes@groups.io to automatically receive all group messages.