a pretty standard keyer (typical lab 5 keyer):
<br>
<a href=deskkeyer.jpg>
<img src=deskkeyersmall.jpg></a>
<p>
not a great keyer, but excellent program, and excellent demonstration of
creative use of interrupts (using pin 10 of parallel port to generate
interrupts):
<br>
<a href=dsc_0021.jpg>
<img src=dsc_0021interruptkeyersmall.jpg></a>
<p>
good ergonomics: a good example of human computer interface design: 
<br>
<a href=septambickeyer.jpg>
<img src=septambickeyersmall.jpg></a>
<br>
<hr>
<a href=y2k_keyboard.htm>y2k keyboard</a>
<hr>