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This kind of user interface.
I want to program different predetermined exercises sequences in this walking machine, so I need some apparatus for doing the keystrokes.
Let say I want a predetermined exercise routine (five minutes at 10mph 10degrees, 3 minutes at 8 mph 6 degrees, etc) so I only...
I'm looking for a simple circuit that squares the value of the input voltage, this is : If I have a 1.2V at the input , the output must be 1.2*1.2 = 1.44V, and so on
thanks in advance for your comments.