Yeah, Waaayyyyy OT!
IIRC the noise you refer to as "key click" was actually the noise of
the solenoids banging the punches through the card. They had to be
strong and fast to keep up with an operator that could punch 10,000
strokes an hour or better! The noise could be reduced a little by
turning the print off. The keypunchers who worked for me hated to
punch cards for the programmers because, of course, they always
wanted the printing turned on and that made it noisier.
Ah, the good old days!
(One of my compadres says "These are the good old days!)
BTW. 10 CPS would be 36,000 strokes an hour! I had some gals working
for me that could lock the machine doing way less than that. I
don't think you could dup cards that fast.
John Campbell <[EMAIL PROTECTED]> on 12/06/2001 03:44:26 PM
Please respond to Linux on 390 Port <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
cc: (bcc: Dennis Wicks/infosvcs/CDG)
Subject: Re: OT (somewhat) - ps2pdf tool
[snip]
Yes, but the key-click (actually key-thunk) mechanism sounded like
it was implemented using an over-sized solenoid. I don't recall
any means of adjusting the loadness, either.
Ka-Chunk! Ka-Chunk!
Oh, well, it slowed down the keystrokes to the 10 CPS level the
controller liked...
[snip]
--------------------
John R. Campbell, Speaker to Machines (GNUrd) {813-801|427}-7310
"Will Work for CLAIM Codes"
IBM Certified: IBM AIX 4.3 System Administration, System Support
