Logic operations usually consist of boolean AND, OR, XOR and NAND operations, and are the most basic forms of operations in an electronic circuit.
2.
In Boolean functions and propositional calculus, the "'Sheffer stroke "', named after Henry M . Sheffer, written " | " ( see vertical bar, not to be confused with " | | " which is often used to represent Boolean algebra and digital electronics it is known as the "'NAND operation " '.
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