The electronic alarm clock is controlled by a chip. The chip is controlled by a small program called a counter. After counting, the binary numbers generated by the encoder and decoder will be transmitted to turn on the semiconductor equipment and the speaker will sound.
Clockwork: A device in the engine that winds up a sheet-like steel bar and uses its elastic force to gradually loosen it to generate power.
Working principle: A coil spring (a clockwork, a kind of elastic element) is used to store energy in a rectangular form of force, and a multi-stage gear with a fixed transmission ratio is used to display different time units.
Use a coil spring (hairspring, an elastic element made of constant elastic alloy) with a precise fixed vibration period and a mechanical clutch brake that swings non-linearly. Professionally called an escapement, the coil spring is set at an accurate angular velocity (A clockwork, an elastic element) The energy stored in the form of a force rectangle is released.
The angular velocity of rotation of different pointers is different but each is constant.