Using the HP-75D Barcode Reader

[vassilisprevelakis]

Hi Martin,

you wrote:
> The wand needs a reflective black/white surface because of its own LED light source.

I remember back in the 80s when I placed my HP 82153 wand over the caps lock LED of my BBC micro and then wrote a program to blink the LED and this allowed me to send data and programs from my BBC micro to my HP-41.

Lots of free time back then !!!

**vp

http://www.series80.org