This simulation illustrates the principles of logic gates. Learn how the different types operate, and then take a test!
Logic gates are used to handle many types of conditions in circuits. For example: Switch engine on if the safety interlocks are in place and the start button is pressed.
Nearly all the gates shown here have two inputs. The outputs depend on the condition of the inputs. The simplest ones have names that make them easy to remember.
AND: The output will be high is input A AND input B are high.
OR: The output will be high if the input A OR the input B are high.
NOT: The output will be high is the input is NOT high.
XOR (exclusive OR): The output will be high if the input A OR the input B are high, excluding the case where both are high.
NAND (Not AND): This is the same as an AND gate followed by a NOT gate. The output will be high if input A AND input B are NOT high.
NOR (Not OR): This is the same as an OR gate followed by a Not gate. The output will be high if input A or input B is low, or if both are low.
NXOR (Not XOR): This is the same as a XOR gate followed by a Not gate. The output will be high if input A OR input B is low, but not if both are low.
Electronics 9.8
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