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In automata theory, combinational logic (also referred to as time-independent logic [1]) is a type of digital logic that is implemented by Boolean circuits, where the output is a pure function of the present input only.
Combinatory logic is a notation to eliminate the need for quantified variables in mathematical logic. It was introduced by Moses Schönfinkel [ 1 ] and Haskell Curry , [ 2 ] and has more recently been used in computer science as a theoretical model of computation and also as a basis for the design of functional programming languages .
In digital electronics, a binary decoder is a combinational logic circuit that converts binary information from the n coded inputs to a maximum of 2 n unique outputs. They are used in a wide variety of applications, including instruction decoding, data multiplexing and data demultiplexing, seven segment displays, and as address decoders for memory and port-mapped I/O.
The combinational logic produces the binary representation for the next state. On each clock cycle, the state register captures the feedback generated from the previous state of the combinational logic and feeds it back as an unchanging input to the combinational part of the state machine.
A barrel shifter is a digital circuit that can shift a data word by a specified number of bits without the use of any sequential logic, only pure combinational logic, i.e. it inherently provides a binary operation.
In combinational logic is a hazard that depend on the distribution of signal propagation delays in the logic circuits and overall design of a logic circuit function implemented. [1]: 43 Combinational functional hazards In combinational logic are hazards that can be detected and suppressed at a higher level of programming, by studying and ...
Switching circuit theory is the mathematical study of the properties of networks of idealized switches. Such networks may be strictly combinational logic, in which their output state is only a function of the present state of their inputs; or may also contain sequential elements, where the present state depends on the present state and past states; in that sense, sequential circuits are said ...
A "single cycle" multiplier (or "fast multiplier") is pure combinational logic. In a fast multiplier, the partial-product reduction process usually contributes the most to the delay, power, and area of the multiplier. [7]