Stages

9-2Power and Inputs of an ICUse a NOT-gate IC so the LED is on while the button is released and off while it's pressed

Power off

Parts

  • Resistor (choose values)2/2 left

Goals

  • L1 is on while P1 is released
  • L1 is off while P1 is pressed

Rules

  • Don't burn out the LED (25 mA max)
  • Don't damage the IC (ratings)
  • P1 is signal only (max 1 mA)
  • No short circuits
B1 5V5VP1A1Y2VCC14GND774HC04U1L1Red−++−

Selected

Press a terminal (the small ◯) to start a wire. Press where you want to bend to place corners, and finish on another terminal or on a wire. Press the middle of a wire and then somewhere else to draw a branch from there. You can drag parts and wires to move them. When you are ready, press "Run!" to turn on the power, and try the switches while it is on.

Line mode

Keys

W
Draw wire
R
Rotate
M
Move
G
Drag
Del
Delete
⌘Z
Undo
⌘⇧Z
Redo
Enter
Run
Home
Fit
H
Hint

Wheel to zoom, right-drag to pan