push button

  1. R

    I need help with a push button...

    I am a newbie in electronics. I need a circuit (which I can use as a subcircuit) in Logisim 3.8.0 When the pushbutton is clicked ONCE, the LED should come on and STAY ON. Here when the clock sticks over, the LED turns off off. I want the LED to stay on! When I click the push button the LED...
  2. D

    Luminated switch for prop replica

    Hi there, I have to wire up x3 5 pin illuminated push buttons for a prop replica, and just need a little guidance on powering just the light in the switch. The switches will have to function other than to be lit up. These are 12v switches. Do I need a 12v battery per switch, or is there a...
  3. S

    Using a push button as start for countdown timer with 74190 ICs

    I´ve been thinking for hours and just can't seem to find a way to do this. As a final project i need to make a presetteable countdown timer using 74190 ICs, i know how to preset numbers using the DATA inputs and how to connect between the 74190s, the problem is that after presetting a number i...
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