What is a logic gate?
Q: What is a logic gate?
A: A logic gate is an electronic component that can be used to conduct electricity based on a rule. The output of the gate is determined by applying this rule to one or more inputs, which may be two wires or the output of other logic gates.
Q: How do logic gates work?
A: Logic gates normally work at only two levels of voltage, a positive level and zero level. Commonly they work based on two states - On and Off. In the On state, voltage is positive and in the Off state, voltage is at zero. The On state usually uses a voltage in the range of 3.5 to 5 volts but this range can be lower for some uses. Logic gates compare the state at their inputs to decide what the state at their output should be and are active when their rules are correctly met.
Q: What type of logic do logic gates use?
A: Logic gates are electronic versions of Boolean logic, which means that truth tables will tell you what the output will be depending on the inputs given.
Q: Are all voltages for an "On" state equal?
A: No, not all voltages for an "On" state are equal as it usually uses a voltage in the range of 3.5 to 5 volts but this range can be lower for some uses.
Q: Do all types of logic gates have two inputs?
A: Not necessarily - some types may have more than two inputs while others may have only one input or none at all depending on its purpose and design.
Q: Is there always electricity flowing through a logic gate when it's active?
A: Yes, when a logic gate is active or its rules are correctly met then electricity will flow through it and its output will be set to its On State Voltage level (usually between 3-5V).
