The first working transistor, a point-contact transistor, was invented by John Bardeen and Walter Houser Brattain at Bell Laboratories in 1947, which led to significant research in the field of solid-state semiconductors during the 1950s. The vacuum tube was used for early electronic devices, before later being largely supplanted by semiconductor components as the fundamental technology of the industry. The electric power industry began in the 19th century, which led to the development of inventions such as gramaphones, radio transmitters, receivers and television. Main article: History of electronic engineering
The largest industry sector is e-commerce, which generated over $29 trillion in 2017.
The central driving force behind the entire electronics industry is the semiconductor industry sector, which has annual sales of over $481 billion as of 2018. The electronics industry consists of various sectors. International regulation and environmental legislation have been developed to address the issues. The industry's size, the use of toxic materials, and the difficulty of recycling have led to a series of problems with electronic waste. Products are primarily assembled from metal–oxide–semiconductor (MOS) transistors and integrated circuits, the latter principally by photolithography and often on printed circuit boards. Contemporary society uses a vast array of electronic devices built-in automated or semi-automated factories operated by the industry. It emerged in the 20th century and is today one of the largest global industries. The electronics industry is the economic sector that produces electronic devices. Workers in an electronics factory in Shenzhen, China
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