chips vs chad

Bob Rosenbloom bobalan at
Mon Apr 5 15:50:01 CDT 2010

--- On Mon, 4/5/10, Al Kossow <aek at> wrote:

From: Al Kossow <aek at>
Subject: Re: chips (was Re: Reading ancient paper digital media (was Re:
To: "On-Topic and Off-Topic Posts" <cctalk at>
Date: Monday, April 5, 2010, 12:50 PM

>> As to punched cards I never heard the rectangular punchings referred to =
>> as
>> 'chips' on either side of the Atlantic. =20
> Nor have I. I wonder if this is an IBM .vs. the rest of the world thing.

page D-5: "Full Chip Pan Micro Switch"


Please site a printed example of the use of "chad" in a manufacturer's manual describing what
is cut out from a card.

I have now given two, from two different vendors, describing them as 'chips'.

Page 2-1 of the Decision Data 8100 manual

has the following:

Punched chad (or chips) from the cards fall into the chip box.

So it looks like they recognized the common usage of chad as the output of a punch.


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