General > General Technical Chat
Software guys, please, no.
nigelwright7557:
--- Quote from: coppice on September 18, 2022, 12:31:33 am ---Look on the bright side. If it wasn't for idiots, there'd be no merit in competence.
--- End quote ---
I am an electronics and software engineer.
I was busy so they took on a software guy to work on a project which was a Z80 based system with keyboard and screen.
For the life of him he couldnt get the keyboard to work reliably.
In the end he resorted to reading keyboard 100 times and took most often result.
I was asked to look at it after he had moved on.
Rookie mistake in that he sent out a row address then immediately read back column data.
The keyboard is on a long ribbon cable so there is a transmission delay.
A single "NOP" fixed the problem.
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