• on Miscellaneous Electronics
  • Published in issue 7/2010 on page 32
About the article

Digital Thumbwheel Switch

(Summer Circuits 2010 article)

Digital Thumbwheel Switch

Thumbwheel switches are remarkably expensive and always playing hard to get. Here’s a cheaper, digital equivalent with the ability to remember the value it was set to. It is programmable to different modes such as inverted or non-inverted BCD code output, programmable READ pin active level, and the choice of hexadecimal or decimal BCD count.

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