Hand-Drawn Barcodes for the HP41

[Jake Schwartz]

Hi,
1980 was the heyday for barcode experimentation and I was hand-drawing barcodes with a fine-point felt-tip black marker for a good part of that year. It bore lots of fruit, and the result was lots of activity in the PPC Journal - check issues starting with Volume 7 Number 5 (from June 1980). Ultimately, a home-made BASIC program for the HP 9845 desktop computer enabled printing HP-41 barcodes on its 80-column thermal printer and that simplified experimentation a great deal. It also was the basis for the barcode page in the back of Bill Wickes' "Synthetic Programming on the HP-41C" tome (also known as the "Green Book").

Jake Schwartz
PPC member $1820