These were made by etching depressions into an N-type germanium base from both sides with jets of Indium(III) sulfate until it was a few ten-thousandths of an inch thick.
The first all-transistor car radio, which was produced in 1955 by Chrysler and Philco, used these transistors in its circuitry and also they were the first suitable for high-speed computers. The first working silicon transistor was developed at Bell Labs on January 26, 1954 by Morris Tanenbaum. The first commercial silicon transistor was produced by Texas Instruments in 1954. This was the work of Gordon Teal, an expert in growing crystals of high purity, who had previously worked at Bell Labs. The transistor provides current gain, allowing a relatively large current in the collector to be switched by a much smaller current into the base terminal. The ratio of these currents varies depending on the type of transistor, and even for a particular type, varies depending on the collector current. (Industrial Development Engineering Associates) of Indianapolis, Indiana, was the first practical transistor radio made in any significant numbers. The TR-1 was announced on October 18, 1954 and put on sale in November 1954 for $49.95 (the equivalent of about $361 in year-2005 dollars) and sold about 150,000 units. The way I provided the name, was to think of what the device did. And at that time, it was supposed to be the dual of the vacuum tube. The vacuum tube had transconductance, so the transistor would have 'transresistance.' And the name should fit in with the names of other devices, such as varistor and thermistor. And. 1947: Invention of the Transistor. The first transistor was invented at Bell Laboratories on December 16, 1947 by William Shockley (seated at Brattain's laboratory bench), John Bardeen (left) and Walter Brattain (right). The picture on the left above shows the first point contact transistor built by Walter Brattain. It consisted of a plastic triangle lightly suspended above a germanium crystal which itself was sitting on a metal plate attached to a voltage source. Vacuum tubes were made containing several three terminal devices called triodes. The transistor is a three terminal, solid state electronic device. In a three terminal device we can control electric current or voltage between two of the terminals by applying an electric current or voltage to the third terminal.  A voltage or current applied to one pair of the transistor's terminals changes the current through another pair of terminals. Because the controlled (output) power can be higher than the controlling (input) power, a transistor can amplify a signal. The transistor provides current gain, allowing a relatively large current in the collector to be switched by a much smaller current into the base terminal. The ratio of these currents varies depending on the type of transistor, and even for a particular type, varies depending on the collector current. The first high-frequency transistor was the surface-barrier germanium transistor developed by Philco in 1953, capable of operating up to 60 MHz. These were made by etching depressions into an N-type germanium base from both sides with jets of Indium(III) sulfate until it was a few ten-thousandths of an inch thick. The transistor provides current gain, allowing a relatively large current in the collector to be switched by a much smaller current into the base terminal. The ratio of these currents varies depending on the type of transistor, and even for a particular type, varies depending on the collector current. Share This article The very first transistor — the foundational building block which almost all of modern civilization was built from — was created at AT&T’s Bell Labs on December 23 1947. The first silicon transistor wasn’t fabricated until 1954 (again by Bell Labs), and later that year Texas Instruments would go on to create the first commercial, mass-produced silicon transistor.Finally, in 1960, Bell Labs produced the first metal-oxide-semiconductor field-effect transistor — the MOSFET. Introduced in 1952, Shockley’s bipolar junction transistor, which was made from a solid piece of semiconductor material and no point contacts, dominated the industry for the next 30 years. Over the next decade many different manufacturing methods were developed to produce faster, cheaper and ever more reliable transistors. An important advance in 1954 was the silicon transistor, first from Morris Tanenbaum at Bell Labs and shortly after by a team led by chemist Willis Adcock at upstart Texas Instruments. The first patent for the field-effect transistor principle was filed in Canada by Austrian-Hungarian physicist Julius Edgar Lilienfeld on October 22, 1925, but Lilienfeld published no research articles about his devices, and his work was ignored by industry. The way I provided the name, was to think of what the device did. And at that time, it was supposed to be the dual of the vacuum tube. The vacuum tube had transconductance, so the transistor would have 'transresistance.' And the name should fit in with the names of other devices, such as varistor and thermistor. And.
https://en.wikipedia.org/wiki/Transistor https://en.wikipedia.org/wiki/History_of_the_transistor http://www.cedmagic.com/history/transistor-1947.html http://www.nobelprize.org/educational/physics/transistor/history/ https://en.wikipedia.org/wiki/Transistor https://en.wikipedia.org/wiki/Transistor http://www.extremetech.com/extreme/175004-the-genesis-of-the-transistor-the-single-greatest-discovery-in-the-last-100-years http://www.computerhistory.org/atchm/who-invented-the-transistor/ https://en.wikipedia.org/wiki/History_of_the_transistor
what was the first transistor made of