Switch 1 and switch 2 is the motor controller. If we turn on switch 1 and switch 2 will make the motor 1 starts and keep electricity flowing into 7secment and present a recurrences of the exit coming through 7 secment. Part 3 will switch the switch switch between motor 1 and motor 2 for the. When switch 3 switch will cause the motor 1 stops working, but the motor will switch 2 at work instead. When 1 motor is not working, there is no electricity flowing into the 7secment, and is therefore not an issue.
การแปล กรุณารอสักครู่..