Transistor and is ubiquitous in modern electronic systems. Julius Edgar Lilienfeld patented a field-effect transistor in 1926 but it was not possible to actually construct a working device at that time. The first practically implemented device was a point-contact transistor invented in 1947 by American physicists John Bardeen, Walter Brattain, and William Shockley. The transistor revolutionized the field of electronics, and paved the way for smaller and cheaper radios, calculators, and computers, among other things. The transistor is on the list of IEEE milestones in electronics, and Bardeen, Brattain, and Shockley shared the 1956 Nobel Prize in Physics for their achievement.
Invention of the integrated circuit attorney John Rallza at Fairchild Semiconductor. A memo of this event by Hoerni was the basis of a patent application for the invention of a planar process, filed in May 1959, and implemented in (the planar process) and (the planar transistor). On January 20, 1959, Fairchild managers met with Edward Keonjian, the developer of the onboard computer for the rocket "Atlas", to discuss the joint development of hybrid digital ICs for his computer. These events probably led Robert Noyce to return to the idea of integration. On January 23, 1959, Noyce documented his vision of the planar integrated circuit, essentially