5 ms·
I never got why keyboards don't just use a demux / output selector. Tie each switch through a diode, toggle one column to high, read the rows. Repeat, scanning
by TheLoneWolfling 11y ago
I never got why keyboards don't just use a demux / output selector.
Tie each switch through a diode, toggle one column to high, read the rows. Repeat, scanning through all columns.
But then again, it's kind of pointless, what with USB limitations (!) and all.
- bandrami 11y agoBecause of historical expectations about the semantics of the "Escape" key, IIRC.
- TheLoneWolfling 11y agoElaborate?
- deleted 11y ago[deleted]