I thought a 1403 was a printer
may have had to punch a carriage control tape for it but not cards
Jefferson Davis
<jeffersondavis69
@gmail.com> To
Sent by: The IBM [email protected]
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System
<[email protected] Subject
ARK.EDU> Re: DISKACNT records
07/21/2010 02:39
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Please respond to
The IBM z/VM
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ARK.EDU>
I sure wished we had a keypunch department .... we had to punch our own!
Good old 1403.
:-)
Jefferson Davis
-----Original Message-----
From: The IBM z/VM Operating System [mailto:[email protected]] On
Behalf Of Mike Walter
Sent: Wednesday, July 21, 2010 12:08 PM
To: [email protected]
Subject: Re: DISKACNT records
Sigh... these youngsters!
History lesson: ON
Completed coding sheets are output from programmers (perhaps their only
valuable output).
After exhaustive "desk checking" (olde English for "a complete and utter
waste of time", since programmer's are always perfect), the coding sheets
were then input to the keypunch department which output punch cards.
The punched cards were then input to computer operators (well, at least
one of their known inputs besides coffee and candy bars and God knows what
else on 3rd shift) who loaded them as input into punch card readers (one
hopes good old 2540's- not those newfangled 3505 optical card readers that
were always jammed by the slightest dust mote, of which card provided
aplenty).
Provided that one of the F1, F2, or BG partitions was open when the
punched cards were read by the punched card reader, and the computer
operator had the appropriate UPSI switches set properly, and had uttered
the correct mystical incantations at the right time, the computer would
process the punched cards into its core memory and execute them as a
program, or supply them for a program's input needs.
History lesson: OFF
Hey... if they had optical card readers, why weren't there any optical
card punches? Think of all the chaff that could have been saved! ;-)
Mike Walter
Hewitt Associates
The opinions expressed herein are mine alone, not my employer's.
