Norman Lathrop Enterprises | Norman Lathrop Enterprises
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Lathrop Report On Newspaper Indexes
A profile of Norman Lathrop Enterprises
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Detailed entries for one subject from the INDEX TO HOW TO DO IT INFORMATION.
Click on a see also (sa) or tracing (xx) to view detailed entries about a related subject.
The entries are in alphabetical order by magazine name and then in chronological sequence.
To obtain a copy of any magazine article contact your local public library or the publisher.


The eclectic card reader. Simple homemade card reader made mostly from wood. The card is moved by hand over a single row of phototransistors.
BYTE Feb 1979 (v.4#2) pg. 70

Card reader for your PC. Infrared card reader inputs data from "PcSwipe" cards which have a punched hole pattern in the bottom edge. The cards are custom made, not commercially available.
ELECTRONICS NOW Aug 1995 (v.66#8) pg. 63

Programmable digital sequencers and controllers. Use them to activate LEDs, motors, solenoids, etc. Part 1. Construction of a 16-step, 4-bit programmable digital sequencer is shown which uses a "punched card" and simple card reader to enter the programs.
MODERN ELECTRONICS [2] May 1988 (v.5#5) pg. 62