Circuitmess Wacky Robot Marv Instructions Manual page 11

Because the internal contact within the pushbutton connects Because the internal contact within the pushbutton connects
while the button is pressed, the electrical circuit is closed, while the button is pressed, the electrical circuit is closed,
and current can flow. When we release the pushbutton, the and current can flow. When we release the pushbutton, the
electrical circuit opens, and the current no longer flows. electrical circuit opens, and the current no longer flows.
The circuit is open with a switch until we manually The circuit is open with a switch until we manually
close it by turning off the device. close it by turning off the device.
Released - no contact
A
Pressed - contact
A
B
B