What combinational logic means
What combinational logic means
Combinational logic circuits produce an output from the current inputs only, so they have no memory. Standard gate rules: NOT A‾\overline{A}A: 1 when A=0A=0A=0; AND A∧BA \land BA∧B: 1 only when both inputs are 1; OR A∨BA \lor BA∨B: 1 when one or both inputs are 1; NAND A∧B‾\overline{A \land B}A∧B: 1 except when both inputs are 1; NOR A∨B‾\overline{A \lor B}A∨B: 1 only when both inputs are 0; EOR A⊕BA \oplus BA⊕B: 1 when the inputs differ.