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Path: utzoo!henry
From: henry@utzoo.UUCP (Henry Spencer)
Newsgroups: net.rumor
Subject: Re: Computer Horror Stories
Message-ID: <6466@utzoo.UUCP>
Date: Wed, 5-Mar-86 13:28:22 EST
Article-I.D.: utzoo.6466
Posted: Wed Mar  5 13:28:22 1986
Date-Received: Wed, 5-Mar-86 13:28:22 EST
References: <14700001@hplabsb.UUCP>
Organization: U of Toronto Zoology
Lines: 17

And then there's the old trick of manipulating an IBM 029 keypunch so
that it punches cards which are all holes.  Great bookmarks; I still
have a few.

Ideally you want to have a roomful of keypunches on hand, because the
mean time between jams when punching those things is only a few cards.
What would happen if one of them went into a high-speed card reader,
I don't know.  The mind boggles.

(For the benefit of the fuzzy-cheeked youngsters in the crowd, punchcards
need a certain amount of mechanical strength to survive machine handling.
All-holes cards are weak and tear easily.  Normal punchcards are constrained
to have [as I recall] at most one punch per column in rows 1-7, so that the
central region of the card is mostly solid.)
-- 
				Henry Spencer @ U of Toronto Zoology
				{allegra,ihnp4,linus,decvax}!utzoo!henry