CDV-700 and Computer

[Pete_Bailey@FPL.COM]

"Head phone" output serves as gate to  "good ol' PNP transistor".



Transistor turns audio pulse to binary signal.



We, back in the 1980's , had this  "press" the value 1 key on a pocket

calculator.

  ( soldered wires  1 key switch . . .to transistor...no relay needed )



Set up calculator as  " 1 plus" constant . . .every time you 'short'  1

key, adds one . . .



Who needs a computer ?



   pete





************************************************************************

You are currently subscribed to the Radsafe mailing list. To

unsubscribe, send an e-mail to Majordomo@list.vanderbilt.edu  Put the

text "unsubscribe radsafe" (no quote marks) in the body of the e-mail,

with no subject line. You can view the Radsafe archives at

http://www.vanderbilt.edu/radsafe/