16 May
2024
16 May
'24
9:20 p.m.
On 5/16/24 15:15, Martin Bishop via cctalk wrote:
Micha
That the board is TTL and 2 layer by the look of it makes reverse engineering rather more
tractable : good luck.
The 25p D pin outs for readers/punches seem substantially standardised,
I believe the standard is RS-323 (all search attempts assume
you mean RS-232). The logic levels are 12 V or so, so not
quite TTL compatible.
Jon