[simpits-tech] To gene or any other programmer

[Gene Buckle]

> but isn't the diods turned the wrong way on the schematics? i mean if
> "Mod 1 row X" is input 5v and "D0-D7" outputs, then i think the diods is
> turned the wrong, because it is blocking the signal even if the switch
> is closed....
>
It's not turned around, really.  This is exactly how the 0/256/0 and EPIC
input matrices are designed to be wired up.

> Why aren't they using this in a keyboard i wonder - no more dead keys...
> or is this ancient history
>
That would increase the pc board complexity as well as increase the part
count and thus overall cost of the keyboard.  Besides, a keyboard in
"normal" everyday use doesn't have to read more than 3 keys simultaneously
anyway.

g.