Algodoo

The scene features 3 groups of parts, Interface, Calculation, and Routing.

Interface:
Key (red): Activates when the key written on it is pressed, open the text menu to change this.
Lamp (brown): Turns bright yellow when hit by a laser, dims back to brown when inactive

Calculation:
NPN (blue): Activates when recieving input from bottom, but will be inhibited by an input from the left.
PNP (pink): Activates when recieving input from bottom and left at the same time.
Source (Green): outputs a constant signal, effectively the power for a circuit

Routing:
Turn (green): Reflects any incoming signal 90 degrees.
OR (green): Reflects either beam coming in from the sides straight up.
Splitter (orange): Splits any incoming signal into two identical signals.

Off to the right is a logic gate or two, depending on when you see this scene.