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Solid-state electronics

From Wikipedia, the free encyclopedia

An integrated circuit (IC) on a printed circuit board. This is called a solid-state circuit because all of the electrical activity in the circuit occurs within solid materials.
An integrated circuit (IC) on a printed circuit board. This is called a solid-state circuit because all of the electrical activity in the circuit occurs within solid materials.

Solid-state electronics means semiconductor electronics: electronic equipment using semiconductor devices such as transistors, diodes and integrated circuits (ICs).[1][2][3][4][5] The term is also used as an adjective for devices in which semiconductor electronics that have no moving parts replace devices with moving parts, such as the solid-state relay in which transistor switches are used in place of a moving-arm electromechanical relay, or the solid-state drive (SSD) a type of semiconductor memory used in computers to replace hard disk drives, which store data on a rotating disk.[6]

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The term "solid-state" became popular at the beginning of the semiconductor era in the 1960s to distinguish this new technology based on the transistor, in which the electronic action of devices occurred in a solid state, from previous electronic equipment that used vacuum tubes, in which the electronic action occurred in a gaseous state. A semiconductor device works by controlling an electric current consisting of electrons or holes moving within a solid crystalline piece of semiconducting material such as silicon, while the thermionic vacuum tubes it replaced worked by controlling current conducted by a gas of particles, electrons or ions, moving in a vacuum within a sealed tube.

Although the first solid-state electronic device was the cat's whisker detector, a crude semiconductor diode invented around 1904, solid-state electronics started with the invention of the transistor in 1947.[7] Before that, all electronic equipment used vacuum tubes, because vacuum tubes were the only electronic components that could amplify—an essential capability in all electronics. The transistor, which was invented by John Bardeen and Walter Houser Brattain while working under William Shockley at Bell Laboratories in 1947,[8] could also amplify, and replaced vacuum tubes. The first transistor Hi-Fi system was developed by engineers at GE and demonstrated at the University of Philadelphia in 1955.[9] In terms of commercial production, The Fisher TR-1 was the first "All Transistor" preamplifier, which became available mid-1956.[10] In 1961, a company named Transis-tronics released a solid-state amplifier, the TEC S-15.[11]

The replacement of bulky, fragile, energy-hungry vacuum tubes by transistors in the 1960s and 1970s created a revolution not just in technology but in people's habits, making possible the first truly portable consumer electronics such as the transistor radio, cassette tape player, walkie-talkie and quartz watch, as well as the first practical computers and mobile phones. Other examples of solid state electronic devices are the microprocessor chip, LED lamp, solar cell, charge coupled device (CCD) image sensor used in cameras, and semiconductor laser.

See also


  1. ^ Murty, B.S.; Shankar, P.; Raj, Baldev; et al. (2013). Textbook of Nanoscience and Nanotechnology. Springer Science and Business Media. pp. 108–109. ISBN 978-3642280306. Archived from the original on 2017-12-29.
  2. ^ Papadopoulos, Christo (2013). Solid-State Electronic Devices: An Introduction. Springer Science and Business Media. pp. 5–6. ISBN 978-1461488361. Archived from the original on 2017-12-29.
  3. ^ Vaughan, Francis (February 22, 2012). "Why the expression "solid state" instead of simply "solid"?". StraightDope message board (Mailing list). Archived from the original on December 7, 2017. Retrieved December 5, 2017.
  4. ^ "What does solid-state mean in relation to electronics?". How Stuff Works. InfoSpace Holdings LLC. 2017. Archived from the original on December 7, 2017. Retrieved December 5, 2017.
  5. ^ "Solid state device". Encyclopaedia Britannica online. Encyclopaedia Britannica Inc. 2017. Archived from the original on August 1, 2017. Retrieved December 5, 2017.
  6. ^ Campardo, Giovanni; Tiziani, Federico; Iaculo, Massimo (2011). Memory Mass Storage. Springer Science and Business Media. p. 85. ISBN 978-3642147524. Archived from the original on 2017-12-29.
  7. ^ Papadopoulos (2013) Solid-State Electronic Devices: An Introduction Archived 2017-12-29 at the Wayback Machine, p. 11, 81-83
  8. ^ Manuel, Castells (1996). The information age : economy, society and culture. Oxford: Blackwell. ISBN 978-0631215943. OCLC 43092627.
  9. ^ Sorab K. Ghandhi; Vernon Mathis; Edward Keonjian; Richard Shea; et al. (1957) The World's First Transistor Hi-Fi System
  10. ^ Announcement High Fidelity, March 1956, p. 9
  11. ^ Announcement Audio Magazine, Aug 1961, p. 44
This page was last edited on 2 April 2023, at 20:58
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