[GreenKeys] TTY Corp Edge Card Punch and Reader

[Don Robert House]

We (Illinois Bell for AT&T) had the TTY Corp Edge Card Punch and Edge  
Card Reader at the Roadway Express terminal in Aptakisic, Illinois.
The drivers carried the card from terminal to terminal where the cards  
were read.
The one repairman we had trained on the beasties spent a lot of time  
there.  The system lasted less than a year.

Don
K9TTY


On 29 Nov 2009, at 5:00 PM, Jim Haynes wrote:

Teletype also dabbled in the edge-punched card product, or "unit record"
as it was called at the time.  It was an attempt to meet the same market
need that was met by an IBM product.  It was doomed to go nowhere  
because
IBM had the ability with its punched card line to mass-reproduce and
machine-sort their style of cards.

The application was something like parts ordering, where there were  
large
files of punched cards containing the ordering description.  Clerks  
would
pull a card for each part to be ordered, put the card through a reader,
and enter variable information such as quantity ordered from a  
typewriter
keyboard.  The output was a punched tape which could be transmitted
to a distant computer center.

The edge-punched cards could only be created and read a character at a
time, so you couldn't use a card reproducer to produce the files of  
cards
to be sent to each place where parts were ordered.

The one IBM installation of this type that I saw involved probably half
a million cards.

______________________________________________________________
GreenKeys mailing list
Home: http://mailman.qth.net/mailman/listinfo/greenkeys
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:GreenKeys at mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html