[Coco] CoCo keyboard connector

[Bruce W. Calkins]

----- Original Message ----- 

From: "Allen Huffman"

> Hey, is there a tech manual online somewhere? I'm interested in how the 
> CoCo keyboard connector works. I know it went to a thin mylar connector 
> for the CoCo 3, but wasn't it a ribbon cable for the CoCo 1?
>
> Are the CoCo keys just switches, that open/close contacts and it's read as 
> an X by Y matrix of switches?
> -
> Allen Huffman -





The thin Mylar connector came out with the "283" "F" board CoCo 1 and 
continued through the 2 and 3.  The keyboard was a 7 by 8 matrix of SPST 
momentary contact switches.  I rebuilt two "real" keyboards for my "E" board 
CoCo 1.  I actually wore out the first.



Bruce W.