The circuits could be made smaller, and the manufacturing process could be automated. The invention of the integrated circuit by Jack Kilby and Robert Noyce solved this problem by making all the components and the chip out of the same block (monolith) of semiconductor material. The electric signals took time to go through the circuit, thus slowing the computer. If the components were large, the wires interconnecting them must be long. A complex circuit like a computer was dependent on speed. However, as the complexity of circuits grew, problems arose. With the small transistor at their hands, electrical engineers of the 1950s saw the possibilities of constructing far more advanced circuits. With the invention of the first transistor at Bell Labs in 1947, the field of electronics shifted from vacuum tubes to solid-state devices. Scientists who had worked on radar returned to solid-state device development. Success came after World War II, when the use of silicon and germanium crystals as radar detectors led to improvements in fabrication and theory. The history of the transistor dates to the 1920s when several inventors attempted devices that were intended to control current in solid-state diodes and convert them into triodes. VLSI enables IC designers to add all of these into one chip.Ī VLSI integrated-circuit die History Background An electronic circuit might consist of a CPU, ROM, RAM and other glue logic. The microprocessor and memory chips are VLSI devices.īefore the introduction of VLSI technology, most ICs had a limited set of functions they could perform. VLSI began in the 1970s when MOS integrated circuit (Metal Oxide Semiconductor) chips were developed and then widely adopted, enabling complex semiconductor and telecommunication technologies. Very large-scale integration ( VLSI) is the process of creating an integrated circuit (IC) by combining millions or billions of MOS transistors onto a single chip.
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