# Logic Circuit: OR Circuit

The OR circuit is called the logical disjunction circuit.
The OR circuit can be thought of as a circuit that outputs when either signal is input.

In same as on the previous page, let's consider an example of turning on a light bulb.
The AND circuit was connected in series, but this OR circuit is connected in parallel.
In other words, if either A or B is ON, the light bulb will be ON.

As shown in the truth table, the output Y will be 1 if 1 is input to either A or B.
The schematic can be expressed by the MIL symbol as shown in the right figure.

## Chapter 1 Basics of Digital Circuits

Digital Value
Digital Value: Binary and Decimal
Digital Value: Units of Binary Data
Digital Value: Notation Method of Data
Digital Value: Conversion Method of the Data
Logic Circuit
Logic Circuit: AND Circuit
Logic Circuit: NOT Circuit
Logic Circuit: Exclusive OR (XOR) Circuit
Logic Circuit: 3 State Buffer (1)
Logic Circuit: 3 State Buffer (2)
Logic Circuit: Application Example of Logic Circuits
Logic Circuit: RS flip-flop Circuit
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