logic gate


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logic gate

[′läj·ik ‚gāt]
(computer science)

logic gate

An integrated circuit or other device whose inputs and outputs represent Boolean or binary values as voltages (TTL uses 0V for False or 0, +5V for True or 1). Different gates implement different Boolean functions: AND, OR, NAND, NOR (these may take two or more inputs) NOT (one input), XOR (two inputs). NOT, NAND and NOR are often constructed from single transistors and the other gates made from combinations of these basic ones. These functions are all combinatorial logic functions, i.e. their outputs depend only on their inputs and there is no internal state. Gates with state, such as latches and flip-flops, are constructed by feeding some of their outputs back to their inputs.

logic gate

A collection of transistors and resistors that implement Boolean logic operations in a circuit. Transistors make up logic gates. Logic gates make up circuits. Circuits make up electronic systems. The truth tables and symbols follow. See Boolean logic.














References in periodicals archive ?
Photonic crystal is a platform which provides a comfort zone to design the logic gates, by the way many applications are available such as optical memory devices, optical computing units, processors, and controllers.
Two-qubit logic gates flipped the spin of one electron if the other electron had a particular spin.
Until now, it had not been possible to make two quantum bits 'talk' to each other -- and thereby create a logic gate -- using silicon.
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A schematic diagram of the Threshold Logic flip-flop (TLFF) is presented in the circuit is composed of a semi-dynamic front-end comprising a differential current switch Threshold Logic gate (DCSTL) followed by a static back-end comprising an SRlatch.
Much like our everyday computer, the brains of a quantum computer consist of chains of logic gates, although quantum logic gates harness quantum phenomena," Raj Patel, from the Griffith University's Centre for Quantum Dynamics, said in a (https://app.
Their advance has to do with logic gates that perform operations on input data to create new outputs.
The researchers, from Imperial College London, have demonstrated that they can build logic gates, which are used for processing information in devices such as computers and microprocessors, out of harmless gut bacteria and DNA.
Lu designed the new circuits so that the memory function is built into the logic gate itself.