What does the word 176 mean?

"176 Vacuum Word" was originally named by American Varian Company, which was the largest manufacturer of vacuum electronic components in the world founded by 1949. Headquartered in Palo Alto, California, the company's main business includes microwave radio frequency, vacuum electronic devices, medical equipment and accelerators. 176 vacuum characters represent 176 different types of vacuum tubes produced by this company.

"176 vacuum character" has been synonymous with vacuum electronic device manufacturing for decades. These vacuum tubes are used in a wide range of markets, such as broadcasting, television, radar and other fields. At that time, vacuum tube, like semiconductor devices, was one of the most important inventions in the field of science and technology, which greatly promoted the development of electronic equipment and communication technology.

Nowadays, with the rapid development of semiconductor technology, the application scope of vacuum tubes has been greatly reduced. However, in some special fields, such as aerospace, national defense and medical equipment, vacuum tube is still the most stable and reliable choice. Therefore, the vacuum electronic device type represented by "176 vacuum word" is still of great value to some professionals and researchers.