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How does a NOT gate circuit work?
A NOT gate simply inverts its input. If the input is HIGH, the output is LOW, and if the input is LOW, the output is HIGH. Such a circuit is easy to build, using a single transistor and a pair of resistors. The operation of this circuit is simple.
How can you identify a NOT gate?
The standard NOT gate is given a symbol whose shape is of a triangle pointing to the right with a circle at its end. This circle is known as an “inversion bubble” and is used in NOT, NAND and NOR symbols at their output to represent the logical operation of the NOT function.
How does a OR gate work?
The OR gate gets its name from the fact that it behaves after the fashion of the logical inclusive “or.” The output is “true” if either or both of the inputs are “true.” If both inputs are “false,” then the output is “false.” In other words, for the output to be 1, at least input one OR two must be 1.
What is the characteristics of AND gate AND OR gate?
The AND gate is a basic digital logic gate that implements logical conjunction (∧) from mathematical logic – it behaves according to the truth table above. A HIGH output (1) results only if all the inputs to the AND gate are HIGH (1). If none or not all inputs to the AND gate are HIGH, LOW output results.
How is a NOT gate represented in a circuit?
Truth tables list the output of a particular digital logic circuit for all the possible combinations of its inputs. The truth table of a NOT gate can be represented as: Other logic gates include AND gates, OR gates, NAND gates, NOR gates, XOR gates, XNOR gates. A NOT gate can easily be realized by using a simple bipolar transistor.
Which is an example of NOT gate using transistors?
NOT Gate using Transistors An Integrated Circuit or IC is a combination of many small circuits in a small package that together performs a common task. For example, an Operational Amplifier or 555 Timer IC is built by a combination of many Transistors, Flip-Flops, Logic Gates and other combinational digital circuits.
Why do logic gates assume a high input state?
The tendency for such a circuit to assume a high input state if left floating is one shared by all gate circuits based on this type of design, known as T ransistor-to- T ransistor L ogic, or TTL.
Can a bipolar transistor perform the NOT gate function?
Bear in mind that other circuit designs are capable of performing the NOT gate function, including designs substituting field-effect transistors for bipolar (discussed later in this chapter). Let’s analyze this circuit for the condition where the input is “high,” or in a binary “1” state.