Switch 1 and switch 2 is the motor controller. If we turn on switch 1 and switch 2 will cause the motor to work flow and 1 fire flow 7secment and shows the distances coming out through 7 secment. Part 3 will switch the switch toggles between the motor 1 and motor 2 for the. When the toggle switches that 3 will make the motor 1 stops working, but the motor will switch 2 at work instead. When 1 motor is not working, there is no current flowing into the 7secment, there is no showing up out of.
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