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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.


A summary of comments and suggestions on the use of machine readable printed software (bar codes) as one means of exchanging programs among amateur computer users.
BYTE Mar 1977 (v.2#3) pg. 13

A low cost light wand amplifier (signal processor) which improves the signal produced when reading printed bar data with a light wand.
BYTE May 1978 (v.3#5) pg. 92
Correction BYTE Sep 1978 (v.3#9) pg. 54

A novel bar code reader. A page of bar code is taped around a tin can set on top of a phonograph turntable. The code is illuminated by two small lights and focused on a photo-transistor by a lens. This signal is then translated into binary voltage levels and sent to the computer's input port.
BYTE Oct 1978 (v.3#10) pg. 162

A comparison of bar code encoding schemes.
BYTE Apr 1979 (v.4#4) pg. 50

A look at the Hewlett-Packard HEDS-3000 bar-code data-entry wand.
BYTE Apr 1980 (v.5#4) pg. 6

Generating bar code in the Hewlett-Packard HP-41C format. Includes a BASIC program that converts an HP-41C program into a series of bar-code rows for printing on a high-quality printer with incremental spacing.
BYTE Jan 1981 (v.6#1) pg. 148

Print your own bar codes. (1) Print UPC codes with the Centronics 737. (2) Print PAPERBYTE codes with the Integral Data System printers.
BYTE May 1981 (v.6#5) pg. 228

Build an inexpensive bar-code scanner. Est. cost $35.
BYTE Nov 1981 (v.6#11) pg. 62

InfoCard card scanner. Limit access to sensitive areas, files, and more with this simple circuit and encoded cards you make yourself. A reflective infrared optical sensor and simple interface are used to read bar codes which offer up to 32,767 coding options with only 15 bars. Est. cost: $15.
ELECTRONICS NOW May 1998 (v.69#5) pg. 37

Straight 2-of-5 bar code generator print programs for the VIC-20 and KayPro computers. Use with any printer able to print a vertical line of "dots" to represent a bar.
MICROCOMPUTING #81 Sep 1983 (v.7#9) pg. 36

Tips on using self-focusing photodiodes. Possible uses include barcode reading, document scanning, etc.
MODERN ELECTRONICS [2] Jun 1985 (v.1#9) pg. 72