The gate is called EXNOR gate.
its output is high when only one input is high.
the Boolean expression for this gate for two inputs A and B is AB+A'B'
When all inputs are HIGH.
The output of the AND gate is high when both inputs are high because that is the definition of an AND gate. (Ouput is true ONLY WHEN Input A AND Input B are true.)
A NOR gate
A NOR gate is a digital logic gate that outputs true (1) only when both of its inputs are false (0), effectively functioning as an inverted OR gate. In contrast, an OR gate outputs true if at least one of its inputs is true. Therefore, while the OR gate produces a high output for any combination of high inputs, the NOR gate will only produce a high output when all inputs are low. This means the NOR gate combines the functions of an OR gate with a NOT gate.
An AND gate
An OR gate outputs a 1 when at least one of its inputs is 1. This means that if either input A or input B (or both) is high (1), the output will be high (1). If both inputs are 0, the output will be 0. Thus, the OR gate functions as a logical inclusive operator.
If the output of a logic gate is 1 while all inputs are logic 0, the gate is a NOR gate. A NOR gate produces a high output (1) only when all its inputs are low (0). In contrast, other gates like AND, OR, and NAND would not produce a 1 output under these conditions.
Short the inputs together. Logic: A High input, with the inputs shorted together, will be H+H at the input side of the NAND gate, therefore resulting in a low output. A Low input, with both inputs shorted together, is L+L for inputs, resulting in a High output. Also, a NOR gate can be used in exactly the same way.
A nor gate provides an output of 0 when any input is 1.Nor gate provides the opposite of or gate. An or gate provides a 1 or true output when any of the inputs is 1 or true. Therefore the opposite output would be provided by a nor gate.
It's a "quad, 2 input nor gate". To understand the significance of a "nor" gate, you need to understand a little about digital logic. An "or" gate takes 2 or more digital inputs and if either is "on", the output will be on. (asserted high). A "nor" gate inverts the output of the "or" gate, meaning that when either of the outputs are "on", the output will be "off" (asserted low). The two input part of the description just indicates that it only accepts two inputs. So, simply stated: If either (or both) input(s) of a quad, 2 input nor gate is (are) asserted high, the output will be low. If both inputs are off (low), the output will be high.
An OR gate is a digital logic gate. If one or both of the inputs to the gate are "1", then the ouput of the gate will be "1" . If both of the inputs to the gate are "0" then the output of the gate will be "0".
An OR gate is a digital logic gate. If one or both of the inputs to the gate are "1", then the ouput of the gate will be "1" . If both of the inputs to the gate are "0" then the output of the gate will be "0".