23 May
2012
23 May
'12
2:19 a.m.
A long time ago (early 1970's) there was a company in the UK called Digico.
They produced mini computers. They featured a built in tape reader that you
pulled the paper tape through by hand. It worked surprisingly well.
Regards
?
Rod Smallwood
?
?
-----Original Message-----
From: cctech-bounces at classiccmp.org [mailto:cctech-bounces at classiccmp.org]
On Behalf Of Tony Duell
Sent: 22 May 2012 20:03
To: cctalk at classiccmp.org
Subject: Re: Software for OCR'ing paper tape? (was: Question about Military
Hi, from an old reader, I have the sensor assembly. It
has 13 LEDs and
photo diodes, arranged in 2 groups of 6, spaced 2.8mm, on both sides of
a central set for the index hole. The latter is appx. 1mm out of line.
The unit is 2" high x 2.26" wide, with a 0.06" slot for the tape.
Output is through 2 74LS240 (Octal tri-state inverting buffers) and
7" of 26 conductor ribbon cable. Weihing only 77g, I'll send it free,
postage paid, to the first guy asking for it.
THis sounds like the read head for typesetter tape (which had offset
sprocket holes) and amy not be much use for reading computer/telegraph tape.
-tony