Algodoo

Some lazer logic gates
Click the red/green squares to toggle the lazers
Dup: Turns 1 lazer into 2 lazers
Not: Outputs on if input is off and visa versa
On: Outputs on if either/both of inputs are on
And: Outputs on if both inputs are on
Nor: Outputs on if neither inputs are on
Nand: Output on if either or no inputs are on (not both)
Xor: Outputs on if only 1 input is on