device called a transistor, which has several applications in radio where a vacuum tube ordinarily is employed, was demonstrated for the first time yesterday at Bell Telephone Laboratories.The device was demonstrated in a radio receiver, which contained none of the conventional tubes.’I It is not surprising that the vacuum tube and radio shared the stage for the announcement of a new device that became known as the point-contact transistor. It wasjnall‘y the needs of computers and the opportunities created by integrated circuits that made the silicon MOSFET the basic element of late 20th-century digital electronics. Development ofthe ‘other transistor’ wasjrst pursued elsewhere. Although these were solved at Bell Laboratories in 1958, Bell remained committed to earlier transistor technology.

However, early devices were not practical due to problems.

It was conlfirmed experimentally in 1948. The underlying concept ofthe MOSFET-modulation of conductivity in a semiconductor triode structure by a transverse electricjeld-rst appeared in a 1928 patent application. Arns The silicon metal-oxide-semiconductorjeld-e$ect transistor (MOSFET or MOS transistor) did not become signijkant commercially until two decades dJter the 1948 announcement ofthe invention ofthe transistor by Bell Laboratories. The other transistor: early history of the metal-oxide- sem-iconduaor f ielld-eff ect transistor by Robert G.

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