NOR

NOR (not-or) is one type of Boolean logical operation. It accepts two binary digits as input, and produces one binary digit as output. It returns true (1) if both of its inputs are false (0), and false if either of its inputs are true.

In computers, the NOR operation may be performed by a dedicated physical device, which is called a logic gate, and implemented as a transistor. A CPU (central processing unit) may contain millions of such transistors, each as small as 1 nanometer.

The symbol , called Peirce's arrow, is sometimes used for NOR. Peirce's arrow is named after Charles Sanders Peirce, who introduced the symbol for NOR operations. For example, AB uses Peirce's arrow to symbolize a NOR operation.

NOR flash memory

NOR flash memory is a low-latency, persistent memory technology based on NOR logic gates. Its properties are similar to NAND flash memory.

Computer abbreviations, Digit, Electronics terms, Flash memory, Hardware terms, Input, Output