How did the electronic watch develop?
The electronic watch appeared in the 1950s, and it has undergone four generations of evolution. The first generation is called a swing electronic watch. This kind of watch was developed by Switzerland in 1959 and is made by using the mature experience and superb technology of producing balance springs.
The second generation is called tuning fork electronic watch. In 1960, the United States developed a tuning fork electronic watch. It is a preliminary attempt to combine electronic technology and precision machining. The parts processing requirements and assembly adjustment process of this watch are more difficult than mechanical watches, so it is quickly replaced before it can be promoted.
The third generation is called an analog crystal electronic watch. Crystal is the common name for quartz. The world’s first quartz clock was made in 1930. In the 1960s, the development of semiconductor integrated circuits made it possible for crystals to be used in the watch industry. In 1969, Japan developed a quartz electronic watch.
The fourth generation is called a liquid crystal display electronic watch. It is a fully electronic watch, without any moving components, the internal structure uses integrated circuits, and the time is more accurate. This watch was put on the market in 1973. Later, digital electronic watches with multiple functions appeared.
The fifth generation is called the radio wave watch. The radio wave watch body is composed of an atomic clock and a radio receiving system. The national time service center sends out the accurate time, and the radio can receive a watch that can automatically check the time through the radio receiving system. The radio-controlled watch has a built-in high-sensitivity small antenna, which receives standard radio waves for automatic time synchronization, thus realizing time accuracy.