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| | Integrated circuit - Wikipedia, the free encyclopedia |
 | | Integrated circuits were made possible by experimental discoveries which showed that semiconductor devices could perform the functions of vacuum tubes, and by mid-20th-century technology advancements in semiconductor device fabrication. |
 | | The integrated circuit was first conceived by a radar scientist, Geoffrey W.A. Dummer (born 1909), working for the Royal Radar Establishment of the British Ministry of Defence, and published in Washington, D.C. on May 7, 1952. |
 | | 4000 series, the CMOS counterpart to the 7400 series |
| en.wikipedia.org /wiki/Integrated_circuit (3472 words) |
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