Solid State Electronics Course Karachi 1970

 

This course was mandatory for people like me after obtaining 3 years Radio & Electronics diploma without Television as Pakistan's first television showcase occurred near Mazar-e-Quaid on September 16, 1965.

Solid-state electronic components, devices and systems based entirely on semiconductor materials such as silicon, germanium or gallium arsenide.

(Picture is from my Personal File)

Solid-state device, electronic device in which electricity flows through solid semiconductor crystals (silicon, gallium arsenide, and germanium) rather than through vacuum tubes. 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.

Solid-state electronics are semiconductor electronics: electronic equipment that use semiconductor devices such as transistors, diodes and integrated circuits (ICs). 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.

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. 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.