What is a logic Circuit?
A Logic circuit uses two logic levels to transfer the information.
A hight logic level or “1” and
a low logic level or “0”
The Logic circuits are made of digital elements such as the AND gate, the OR gate, the NOT gate and a combinations of them
These combinations give way to other types of digital elements such as other gates, among others.
- the NAND gate
- the NOR gate
- the Exclusive OR gate
- Mutiplexors
- Demultiplexors
- Decoders
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- Encoders
- Memories
- Flip-flops
- Microprocessors
- Microcontrollers
- Etc. |
Modern digital electronics is used to perform many functions. While digital electronic circuits might seem very complex, actually they are built with a very large number of very simple circuits.
In Digital electronics the information is transmited between circuits in a binary form (zeros and ones).
The binary information is represented in the form of:
- "0" and "1",
- "Open" or "closed" (switch)
- "On" and "Off"
- "False" or "true", etc..
A logic circuit can be represented in many ways. In the following circuits the lamp can be turned on or off, depending on the switch position.
 
A truth table is a tabular listing of all possible states of the switches (inputs) that affect the circuit and their corresponding output values.
Related Links
Logic Levels
BCD code
AND gate
OR gate
Diode Logic
Combinational circuit
Sequential circuit
Analog and Digital. What´s the difference?
Truth table >>
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