What is an OR Gate?
An OR gate, also known as an OR logic gate, is a digital logic gate that performs the logical OR (disjunction) operation. It has two or more input signals and a single output signal. The OR gate outputs a high voltage (typically represented as 1 or TRUE) if any of the input signals are high, and it outputs a low voltage (typically represented as 0 or FALSE) only if all input signals are low. In other words, it produces an output when at least one of its inputs is true. The OR gate is represented by the symbol "+".
An OR gate is a logic gate that performs a logical OR operation. It takes two or more input signals and produces an output signal if at least one of the input signals is high (1). The output is low (0) only when all the input signals are low.
The OR gate symbol is a circle with a curve entering from the left side and another curve entering from the right side, with a curve exiting from the bottom side. Each curve represents an input, and the curve exiting from the bottom represents the output.
The truth table for an OR gate with two inputs (A and B) is as follows:
| A | B | Output |
|---|---|--------|
| 0 | 0 | 0 |
| 0 | 1 | 1 |
| 1 | 0 | 1 |
| 1 | 1 | 1 |
In this truth table, the output is only 0 when both inputs are 0. In all other cases, the output is 1.