The [OR](OR) numerical operator returns a comparative bit value of 1 if either value's bit is on.

## Syntax

>  result = firstValue [OR](OR) secondValue

## Description

* If both bits are off, it returns 0.
* If one or both bits are on then it returns 1.
* [OR](OR) never turns off a bit and can be used only to turn a bit on.

The results of the bitwise logical operations, where *A* and *B* are operands, and *T* and *F* indicate that a bit is set or not set:

| A | B |   | [NOT](NOT) B | A [AND](AND) B | A [OR](OR) B | A [XOR](XOR) B | A [EQV](EQV) B | A [IMP](IMP) B |
| - | - | - | - | - | - | - | - | - |
| T | T |   | F | T | T | F | T | T |
| T | F |   | T | F | T | T | F | F |
| F | T |   | F | F | T | T | F | T |
| F | F |   | T | F | F | F | T | T |

**[Relational Operations](Relational-Operations) return negative one (-1, all bits set) and zero (0, no bits set) for *true* and *false*, respectively.**
This allows relational tests to be inverted and combined using the bitwise logical operations.

## Example(s)

OR always turns bits on! Never off.

```vb

 a% = 5 ' 101 binary
 b% = 4 ' 100 binary
 results% = a% OR b%  ' still 101 binary using OR
 PRINT "Results% ="; results% 

```

```text

 Results% = 5 

```

Turning a data register bit on.

```vb
  
   address% = 888    'parallel port data register
   bytevalue% = INP(address%)
   OUT address%, bytevalue% OR 4 

```

> *Explanation:* The third register bit is only turned on if it was off. This ensures that a bit is set. OR could set more bits on with a sum of bit values such as: OUT address%, 7 would turn the first, second and third bits on. 1 + 2 + 4 = 7

## See Also

* [AND](AND), [XOR](XOR) 
* [AND (boolean)](AND-(boolean)), [OR (boolean)](OR-(boolean))
* [Binary](Binary), [Boolean](Boolean)