Bitwise NOR
Free online Bitwise NOR Calculator: compute ~(A | B) between two integers. Get decimal and binary results for digital logic, programming, and Boolean algebra.
About This Calculator
The Bitwise NOR Calculator computes the bitwise NOR operation (~(A | B)) between two integers. The NOR operation first performs a bitwise OR on the two numbers, then inverts every bit. In Boolean notation, this is expressed as ~(A | B). For each bit position, the result is 1 only when both input bits are 0.
Bitwise NOR is one of the fundamental operations in digital logic and computer engineering. Because NOR is a universal gate (any Boolean function can be implemented using only NOR gates), it is widely used in circuit design, low-level programming, and embedded systems development. The calculator displays results in both decimal and binary (0b prefix) formats for easy verification.
The NOR operation is the logical complement of OR: where OR outputs 1 if at least one input is 1, NOR outputs 1 only when both inputs are 0. In digital electronics, NOR gates are preferred in some circuit designs because they are simpler to fabricate than AND or OR gates in certain semiconductor technologies like RTL (resistor-transistor logic) and DTL (diode-transistor logic). This makes the NOR gate a building block for many integrated circuits.
In programming, bitwise NOR is used for clearing specific bits, computing two's complement operations, and implementing efficient bitmask manipulations. The 32-bit signed integer result is displayed alongside its unsigned binary representation, making it easy for students and professionals to verify their digital logic work. Whether you are learning Boolean algebra, debugging embedded firmware, or designing FPGA logic, this calculator provides instant bitwise NOR results for any integer inputs.
Frequently Asked Questions
How does the bitwise NOR calculator work?
Enter two integers A and B. The calculator computes the bitwise NOR operation (~(A | B)) which first ORs the bits of A and B, then inverts every bit. The result is shown in both decimal and binary (0b) formats.
What is bitwise NOR used for?
Bitwise NOR is used in digital logic design, low-level programming, and embedded systems. Since NOR is a universal gate, any logical operation can be implemented using only NOR gates. It is also used in bit manipulation for clearing bits and computing two's complement.
What is the NOR gate truth table?
The NOR gate truth table shows: if A=0 and B=0 then output=1; if A=0 and B=1 then output=0; if A=1 and B=0 then output=0; if A=1 and B=1 then output=0. NOR outputs 1 only when both inputs are 0.
Is NOR a universal gate?
Yes, NOR is a universal gate. Any Boolean function can be constructed using only NOR gates. This makes NOR fundamental in digital circuit design where chip designers can implement all logic using just one type of gate.
What is the difference between NOR and NAND?
NOR outputs true only when both inputs are false (inverted OR). NAND outputs false only when both inputs are true (inverted AND). Both are universal gates, but they produce opposite results for most input combinations.
How do I convert NOR gates to an AND gate?
Feed input A to both terminals of a NOR gate to get NOT A. Repeat for B to get NOT B. Pass NOT A and NOT B as inputs to a third NOR gate. The output is A AND B. This requires three NOR gates total.
Is this NOR calculator free?
Yes, all calculators on Calculy are completely free to use with no registration required.
Can I share my NOR calculation?
Yes, the URL saves your input values so you can bookmark or share the exact calculation.