The importance of transistors
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The importance of transistors
A transistor, whose real name is a semiconductor transistor, is a semiconductor device that internally contains two PN junctions, usually three lead electrodes externally. It has the functions of mplification and switching of electric signals, and is widely used. Both the input stage and the output stage use a transistor logic circuit called a transistor-transistor logic circuit. In books and practical applications, it is simply referred to as a TTL circuit. It is a type of semiconductor integrated circuit, and the most common one is TTL NAND gate. TTL NAND gate is a circuit system that consists of several transistors and resistors. It is fabricated on a small piece of silicon and packaged into a single component. Transistors are one of the most widely used devices in semiconductor transistors. Use "V" or "VT" (the old text symbol is "Q", "GB", etc.).
Transistors are considered to be one of the greatest inventions in modern history, and can be compared in importance to inventions such as printing, cars and telephones. Transistors are actually the key active components of all modern appliances. The importance of transistors in today's society is primarily due to the ability of transistors to be mass-produced using highly automated processes, which can incredibly achieve extremely low unit costs.
Although millions of monolithic transistors are still in use, most transistors are assembled with diodes |-{A|zh-cn:diodes;zh-tw:diodes}-, resistors, and capacitors On a microchip (chip) to make a complete circuit. Analog or digital or both are integrated on the same chip. The cost of designing and developing a complex chip is quite high, but when spread over the usual million production units, the price per chip is minimal. A logic gate contains 20 transistors, and in 2005 an advanced microprocessor used 289 million transistors.
In particular, after the power of transistors in military planning and space navigation has become increasingly apparent, in order to compete for the dominant position in the electronics field, countries around the world have launched fierce competition. In order to realize the miniaturization of electronic equipment, people have to pay huge financial support to the electronics industry at any cost.
Since Fleming invented vacuum diodes in 1904, in 1906, DeForrest invented vacuum triodes, and electronics has grown rapidly as a new discipline. But the real advancement in electronics should also begin after the invention of the transistor. In particular, the emergence of PN junction transistors has opened up a new era of electronic devices, which has caused a revolution in electronic technology. In just over a decade, the emerging transistor industry has quickly replaced the position that the tube industry has achieved through years of struggle with unbeatable ambitions and the unscrupulous momentum of young people, and has become a leader in the field of electronic technology.