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  2. And-inverter graph - Wikipedia

    en.wikipedia.org/wiki/And-inverter_graph

    An and-inverter graph (AIG) is a directed, acyclic graph that represents a structural implementation of the logical functionality of a circuit or network.An AIG consists of two-input nodes representing logical conjunction, terminal nodes labeled with variable names, and edges optionally containing markers indicating logical negation.

  3. AND-OR-invert - Wikipedia

    en.wikipedia.org/wiki/AND-OR-Invert

    This results in increased speed, reduced power, smaller area, and potentially lower fabrication cost. For example, a 2-1 AOI gate can be constructed with 6 transistors in CMOS, compared to 10 transistors using a 2-input NAND gate (4 transistors), an inverter (2 transistors), and a 2-input NOR gate (4 transistors).

  4. OR-AND-invert - Wikipedia

    en.wikipedia.org/wiki/OR-AND-invert

    Symbol for an 2-1 OAI-gate. The OR gate has the inputs A and B. A 2-1-OAI gate realizes the function = ... Code of Conduct; Developers; Statistics; Cookie statement;

  5. OR gate - Wikipedia

    en.wikipedia.org/wiki/OR_gate

    The gate can be represented with the plus sign (+) because it can be used for logical addition. [1] Equivalently, an OR gate finds the maximum between two binary digits, just as the AND gate finds the minimum. [2] Together with the AND gate and the NOT gate, the OR gate is one of three basic logic gates from which any Boolean circuit may

  6. XOR gate - Wikipedia

    en.wikipedia.org/wiki/XOR_gate

    The result is a circuit that outputs a 1 when the number of 1s at its inputs is odd, and a 0 when the number of incoming 1s is even. This makes it practically useful as a parity generator or a modulo-2 adder. For example, the 74LVC1G386 microchip is advertised as a three-input logic gate, and implements a parity generator. [13]

  7. Logic gate - Wikipedia

    en.wikipedia.org/wiki/Logic_gate

    A logic circuit diagram for a 4-bit carry lookahead binary adder design using only the AND, OR, and XOR logic gates.. A logic gate is a device that performs a Boolean function, a logical operation performed on one or more binary inputs that produces a single binary output.

  8. Majority function - Wikipedia

    en.wikipedia.org/wiki/Majority_function

    The few systems that calculate the majority function on an even number of inputs are often biased towards "0" – they produce "0" when exactly half the inputs are 0 – for example, a 4-input majority gate has a 0 output only when two or more 0's appear at its inputs. [1] In a few systems, the tie can be broken randomly. [2]

  9. XNOR gate - Wikipedia

    en.wikipedia.org/wiki/XNOR_gate

    XNOR gates are represented in most TTL and CMOS IC families. The standard 4000 series CMOS IC is the 4077, and the TTL IC is the 74266 (although an open-collector implementation). Both include four independent, two-input, XNOR gates. The (now obsolete) 74S135 implemented four two-input XOR/XNOR gates or two three-input XNOR gates.