Logic Operations Block

The Logic Operations block does a Logic operation on its inputs, and outputs the result. A Logic operation takes inputs that are True or False, and produces a True/False output. The Logic operations available are AND, OR, XOR, and NOT.

Logic Operations

	Mode Selector
	Inputs
	Output

Choose the Logic operation you want to use by selecting a mode with the Mode Selector. The block will calculate the Result based on the Inputs, as shown in this table.

Modes	Inputs Used	Result
AND	A, B	True if both A and B are True, otherwise False
OR	A, B	True if either A or B (or both) is True, False if both A and B are False
XOR	A, B	True if exactly one of A and B is True, False if both A and B are True, False if both A and B are False
NOT	A	True if A is False, False if A is True

Example

This program will make a robot drive forward until either the Touch Sensor is pressed or the Colour Sensor detects black. It uses the Logic OR mode to combine the outputs of two sensor blocks into a single True or False result. A result of True tells the loop to end, and then the robot is stopped.

Inputs and Outputs

The inputs of the Logic Operations block provide the values for the Logic operation. Typically, you will supply both of the input values with Data Wires from the outputs of other Programming Blocks.

Inputs	Type	Allowed Values	Notes
A	Logic	True/False
B	Logic	True/False	Not used in NOT mode

The output of the block gives the result of the operation. To use the output, use a Data Wire to connect it to another Programming Block.

Output	Type	Notes
Result	Logic	Result of the Logic operation (True or False)

Quick links

Logic Operations
Inputs and Outputs