The principle of coin-operated doll machine is electromechanical integration automatic device. On the premise of receiving the game coin input, the controller inputs the signal by touching the button, starts the mechanical device at the relevant position to complete the specified action, and outputs the signal.

Extended answer:

1, doll machine, also known as vending machine, is commonly known as doll machine in Taiwan Province province and doll machine in Hong Kong, which is a kind of electronic game originated in Japan. The original Japanese name is UFO catcher. At present, Japanese doll clamping machine (2 claws) and Korean doll clamping machine (3 claws) are popular.

2. It refers to the display of goods in a transparent box with a mechanical arm that can control the grabbing of goods. Users should control their arms with their own skills to get the goods they want. Because most stuffed dolls such as plush toys are placed first, they are called "dolls" and "dolls". Because puppets are very popular, they are very popular with children and teenagers.

3. When coins are thrown continuously for more than a certain number of times and no dolls fall, the grabbing system will reward them once. This time, the claws are extremely powerful. No matter where they are caught, they will hold on tight and then grab the doll. If you don't catch it this time, there will still be a reward when you put in the coin next time until you catch it.

4. Because there is a sensor at the doll exit of the grab, the doll falls and the reward is over. This is the so-called cycle. Therefore, playing catch is to seize the moment of the cycle, not the so-called technology.