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Please take a look at this video http://www.youtube.com/watch?v=6HKQTuVD2ac and tell me what's the LITTLE BLACK switch called where he changes the challenges (1 to 10) with. I guess technically it's a number decoder but I'd like to know the name of the design of the switch as shown in the video.

image link: http://www.abload.de/img/unbenannt9sz1b.png

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A datasheet for a similar switch is shown here.

This datasheet refers to the switch as a "push operated" type of "thumbwheel switch."

You may also hear this called a BCD switch, since the selected number (0-9) is provided, electrically, as four bits coded in BCD (Binary Coded Decimal) format. If the switch includes all 16 of the four bit values (0-F) is may be referred to as a HEX switch.

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  • \$\begingroup\$ thanks for that! thumbwheel switch was the term i was looking for. \$\endgroup\$
    – arminb
    Commented Mar 21, 2012 at 15:10

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