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RichCini
PostPosted: Thu Jul 05, 2007 2:37 pm 
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Joined: Wed Sep 03, 2003 6:53 pm
Posts: 153
Location: Long Island, NY
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I found a bunch of keyboard switches at Goldmine Electronics (10/$1) and I plan on building an external keyboard for my KIM.

Since I have the ability to rearrange the keyboard, I'm soliciting opinions on arrangement. I'm thinking as follows, which is more like a computer keypad:

Code:
 
  GO ST RS PC
      F  E  D
  7   8  9  C
  4   5  6  B
  1   2  3  A
  AD  0 DA  +



Opinions?

_________________
Rich Cini
Build Master and maintainer of the Altair32 Emulation project
http://cini.classiccmp.org
http://altair32.classiccmp.org
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kc5tja
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PostPosted: Thu Jul 05, 2007 4:25 pm 
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Joined: Sat Jan 04, 2003 10:03 pm
Posts: 1706
You know, with one or two external 1-of-8 decoders, such as the 74138, you can support up to 32 or 64 keys too (8*4 or 16*4). This would enable you to provide a more complete keyboard layout if you wanted.
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