## Not Gate Truth Table #### What is a NOT gate in logic gates?

Conclusion – NOT gate is logic gate that gives a negative mathematical output. Hence it is also called an Inverter. That means it gives 0 when input is 1 and 1 when the input is 0. NOT gate is a single window system wherein we have a single input and output system.

#### What is the NOT gate notation?

NOT Gate The NOT gate is the most basic logic gate of all other logic gates. NOT gate is also known as an inverter or an inverting Buffer, NOT gate only has one input and one output. When the input signal is “Low”, the output signal is “High” and when the input signal is “High”, the output is “Low”.

#### What is an example of a NOT gate? The NOT Gate is a digital logic gate that outputs the opposite of a single input signal, An example of a NOT Gate would be a game of Opposites with a friend. Whatever you ask them to do, they have to do the opposite. It would go like this: – Input – You tell him to shut the door; Output – he opens the door. – Input – You tell him to turn on the lights; Output – He turns off the lights.

## Why transistor is used in NOT gate?

Hint: NOT gates are the logical gates which gives the negation of the input value as output. It is the basic logic gate among all the gates. A true input will produce a false output. This characteristic of NOT is widely used in electronics. Complete answer: A transistor, also known as a Bipolar Junction Transistor (BJT), is a n-p-n or p-n-p device which has three terminals which can be used flexibly according to the user’s requirement. When we observe the output from such a CE transistor, we will notice that the output has high power when a lower power input is given. This is due to a phase shift that takes place in this configuration. A phase shift of a half cycle or 180degrees takes place in this type of transistor configuration.

1. Such a phase shift has the ability to make a negated output always.i.e., a high input power will give a low output and vice versa.
2. This property of transistors helps in switching operations in electronic devices and thus transistors are used as a NOT gate.
3. Additional Information: The phase change is developed due to the reverse saturation current developed in the base-collector region even when the input is zero.

Note: The base-collector region and base-emitter junction are reverse biased even when there is no input correct. This is due to the reverse saturation current developed in the base-collector region. In this case, there is no current flow from collector to emitter and it acts as an open switch.

### How are not gates made?

NAND and NOR Gate Equivalents – An Inverter or logic NOT gate can also be made using standard NAND and NOR gates by connecting together ALL their inputs to a common input signal for example. A very simple inverter can also be made using just a single stage transistor switching circuit as shown. When the transistors base input at “A” is high, the transistor conducts and collector current flows producing a voltage drop across the resistor R thereby connecting the output point at ” Q ” to ground thus resulting in a zero voltage output at ” Q “.

## Is NOT gate a universal gate?

Answer (Detailed Solution Below) – Option 4 : OR-AND gate defined as a + b.c Free 20 Questions 20 Marks 20 Mins OR-AND gate defined as a + b.c, this gate is NOT universal. Explanation: Universal Logic Gates:- In addition to the NOT, AND, OR, and XOR gates, three more common gates are available.

These are identical to AND, OR, and XOR, except that the gate output has been negated. These gates are called NAND (‘Not AND’), NOR (‘Not OR’), and XNOR (‘eXclusive Not OR’). NAND gate output is defined as, $$\overline$$, and similarly, NOR gate output is defined as, $$\overline$$ NAND and NOR gates are also called Universal Logic Gates.

The reason being that all the basic logic gates (NOT, AND, and OR) can be realized using NAND/NOR gates only. Additional Information AND-OR-INVERT gate defined as :- $$\overline$$ AND-OR-INVERT gates are two-level compound (or complex) logic functions constructed from the combination of one or more AND gates followed by a NOR gate. It is also called Universal gates.

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#### What is the opposite of a NOT gate?

It’s called an identity gate.

#### What is NAND gate and NOT gate?

Definition – NAND is an abbreviation for “NOT AND.” A two-input NAND gate is a digital combination logic circuit that performs the logical inverse of an AND gate. While an AND gate outputs a logical “1” only if both inputs are logical “1,” a NAND gate outputs a logical “0” for this same combination of inputs. Figure 1. Symbol and truth table for NAND gate

## What is NOT gate in Python?

Logic Gates in Python – GeeksforGeeks Logic gates are elementary building blocks for any digital circuits. It takes one or two inputs and produces output based on those inputs. Outputs may be high (1) or low (0). Logic gates are implemented using diodes or transistors.

It can also be constructed using vacuum tubes, electromagnetic elements like optics, molecules, etc. In a computer, most of the electronic circuits are made up of logic gates. Logic gates are used to circuits that perform calculations, data storage, or show off object-oriented programming especially the power of inheritance.

There are seven basic logic gates defined are: AND gate, OR gate, NOT gate, NAND gate, NOR gate, XOR gate, an XNOR gate.1. AND Gate The AND gate gives an output of 1 if both the two inputs are 1, it gives 0 otherwise.

 def AND (a, b): if a = = 1 and b = = 1 : return True else : return False if _name_ = = ‘_main_’ : print (AND( 1, 1 )) print ( “+-+-+” ) print ( ” | AND Truth Table | Result |” ) print ( ” A = False, B = False | A AND B =”,AND( False, False ), ” | ” ) print ( ” A = False, B = True | A AND B =”,AND( False, True ), ” | ” ) print ( ” A = True, B = False | A AND B =”,AND( True, False ), ” | ” ) print ( ” A = True, B = True | A AND B =”,AND( True, True ), ” | ” )

Output: True +-+- | AND Truth Table | Result | A = False, B = False | A AND B = False | A = False, B = True | A AND B = False | A = True, B = False | A AND B = False | A = True, B = True | A AND B = True | 2. NAND Gate The NAND gate (negated AND) gives an output of 0 if both inputs are 1, it gives 1 otherwise.

 def NAND (a, b): if a = = 1 and b = = 1 : return False else : return True if _name_ = = ‘_main_’ : print (NAND( 1, 0 )) print ( “+-+-+” ) print ( ” | NAND Truth Table | Result |” ) print ( ” A = False, B = False | A AND B =”,NAND( False, False ), ” | ” ) print ( ” A = False, B = True | A AND B =”,NAND( False, True ), ” | ” ) print ( ” A = True, B = False | A AND B =”,NAND( True, False ), ” | ” ) print ( ” A = True, B = True | A AND B =”,NAND( True, True ), ” | ” )

Output: True +-+- | NAND Truth Table | Result | A = False, B = False | A AND B = True | A = False, B = True | A AND B = True | A = True, B = False | A AND B = True | A = True, B = True | A AND B = False | 3. OR Gate The OR gate gives an output of 1 if either of the two inputs are 1, it gives 0 otherwise.

 def OR(a, b): if a = = 1 or b = = 1 : return True else : return False if _name_ = = ‘_main_’ : print (OR( 0, 0 )) print ( “+-+-+” ) print ( ” | OR Truth Table | Result |” ) print ( ” A = False, B = False | A OR B =”,OR( False, False ), ” | ” ) print ( ” A = False, B = True | A OR B =”,OR( False, True ), ” | ” ) print ( ” A = True, B = False | A OR B =”,OR( True, False ), ” | ” ) print ( ” A = True, B = True | A OR B =”,OR( True, True ), ” | ” )
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Output: False +-+-+ | OR Truth Table | Result | A = False, B = False | A OR B = False | A = False, B = True | A OR B = True | A = True, B = False | A OR B = True | A = True, B = True | A OR B = True | 4. XOR Gate The XOR gate gives an output of 1 if either of the inputs is different, it gives 0 if they are the same.

 def XOR (a, b): if a ! = b: return 1 else : return 0 if _name_ = = ‘_main_’ : print (XOR( 5, 5 )) print ( “+-+-+” ) print ( ” | XOR Truth Table | Result |” ) print ( ” A = False, B = False | A XOR B =”,XOR( False, False ), ” | ” ) print ( ” A = False, B = True | A XOR B =”,XOR( False, True ), ” | ” ) print ( ” A = True, B = False | A XOR B =”,XOR( True, False ), ” | ” ) print ( ” A = True, B = True | A XOR B =”,XOR( True, True ), ” | ” )

Output: 0 +-+-+ | XOR Truth Table | Result | A = False, B = False | A XOR B = 0 | A = False, B = True | A XOR B = 1 | A = True, B = False | A XOR B = 1 | A = True, B = True | A XOR B = 0 | 5. NOT Gate It acts as an inverter. It takes only one input. If the input is given as 1, it will invert the result as 0 and vice-versa.

 def NOT(a): return not a if _name_ = = ‘_main_’ : print (NOT( 0 )) print ( “+-+-+” ) print ( ” | NOT Truth Table | Result |” ) print ( ” A = False | A NOT =”,NOT( False ), ” | ” ) print ( ” A = True, | A NOT =”,NOT( True ), ” | ” )

Output: 1 +-+-+ | NOT Truth Table | Result | A = False | A NOT = 1 | A = True, | A NOT = 0 | 6. NOR Gate The NOR gate (negated OR) gives an output of 1 if both inputs are 0, it gives 0 otherwise.

 def NOR(a, b): if (a = = 0 ) and (b = = 0 ): return 1 elif (a = = 0 ) and (b = = 1 ): return 0 elif (a = = 1 ) and (b = = 0 ): return 0 elif (a = = 1 ) and (b = = 1 ): return 0 if _name_ = = ‘_main_’ : print (NOR( 0, 0 )) print ( “+-+-+” ) print ( ” | NOR Truth Table | Result |” ) print ( ” A = False, B = False | A NOR B =”,NOR( False, False ), ” | ” ) print ( ” A = False, B = True | A NOR B =”,NOR( False, True ), ” | ” ) print ( ” A = True, B = False | A NOR B =”,NOR( True, False ), ” | ” ) print ( ” A = True, B = True | A NOR B =”,NOR( True, True ), ” | ” )

Output: 1 +-+-+ | NOR Truth Table | Result | A = False, B = False | A NOR B = 1 | A = False, B = True | A NOR B = 0 | A = True, B = False | A NOR B = 0 | A = True, B = True | A NOR B = 0 | 7. XNOR Gate The XNOR gate (negated XOR) gives an output of 1 both inputs are same and 0 if both are different.

 def XNOR(a,b): if (a = = b): return 1 else : return 0 if _name_ = = ‘_main_’ : print (XNOR( 1, 1 )) print ( “+-+-+” ) print ( ” | XNOR Truth Table | Result |” ) print ( ” A = False, B = False | A XNOR B =”,XNOR( False, False ), ” | ” ) print ( ” A = False, B = True | A XNOR B =”,XNOR( False, True ), ” | ” ) print ( ” A = True, B = False | A XNOR B =”,XNOR( True, False ), ” | ” ) print ( ” A = True, B = True | A XNOR B =”,XNOR( True, True ), ” | ” )

Output: 1 +-+-+ | XNOR Truth Table | Result | A = False, B = False | A XNOR B = 1 | A = False, B = True | A XNOR B = 0 | A = True, B = False | A XNOR B = 0 | A = True, B = True | A XNOR B = 1 | : Logic Gates in Python – GeeksforGeeks

### Which gate can be used to form NOT gate?

NAND gates are known as universal gates, because you can make any other gates out of them. You can make a NOT, AND, OR, NOR, XOR, and XNOR just using NANDs: No and yes.

## Is NOT gate a diode?

A NOT gate, which I call an inverter, requires a phase reversal. A diode, wire, or resistor cannot do a inversion. That is to say a positive transition on the input must rsult in a negative transition on the output. A didoe cannot ever do this.

#### What is NOT gate Wikipedia?

From Wikipedia, the free encyclopedia Traditional NOT gate (inverter) symbol In digital logic, an inverter or NOT gate is a logic gate which implements logical negation, It outputs a bit opposite of the bit that is put into it. The bits are typically implemented as two differing voltage levels.

#### Why does NOT gate need 2 transistors?

Explaining the need for two transistors in Not Gate Two transistors are needed if the output must be actively driven both high and low, which is usually the case. If, for instance, only the lower transistor were used, then when the transistor is ON, the output is pulled low, but when it is OFF, the output voltage can be high or low or anywhere in between.

As shown, either the output is pulled low (logic 0) or it is pulled high (logic 1). A similar output stage will be used on almost any output, whether it’s gates, flip-flops, shift registers, counters or whatever. As a note, some logic only uses a single transistor, usually connected to ground. When the transistor is a bipolar transistor it is an NPN, and the output is called an open-collector output; for CMOS it’s an open-drain output.

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Generally, this is connected to Vcc by means of a resistor, which provides pullup when the output is a logic high. Examples are the TTL 7406/74LS06, or the CMOS 74HC06. : Explaining the need for two transistors in Not Gate

#### What is the function of a NOT gate?

A NOT gate inverts the input signal which is the same as complementing a signal or changing the logic in a digital circuit.

### WHY IS NOT gate called an inverter?

A NOT gate puts the input condition in the opposite order, means for high input it give low output and for low input it give high output. For this reason NOT gate is known as inverter circuit.

### What are 7 logic gates?

Basic logic gates – There are seven basic logic gates: AND, OR, XOR, NOT, NAND, NOR, and XNOR. AND | OR | XOR | NOT | NAND | NOR | XNOR The AND gate is so named because, if 0 is called “false” and 1 is called “true,” the gate acts in the same way as the logical “and” operator. AND gate

 Input 1 Input 2 Output 1 1 1 1 1

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. OR gate

 Input 1 Input 2 Output 1 1 1 1 1 1 1

The XOR ( exclusive-OR ) gate acts in the same way as the logical “either/or.” The output is “true” if either, but not both, of the inputs are “true.” The output is “false” if both inputs are “false” or if both inputs are “true.” Another way of looking at this circuit is to observe that the output is 1 if the inputs are different, but 0 if the inputs are the same. XOR gate

 Input 1 Input 2 Output 1 1 1 1 1 1

A logical inverter, sometimes called a NOT gate to differentiate it from other types of electronic inverter devices, has only one input. It reverses the logic state. If the input is 1, then the output is 0. If the input is 0, then the output is 1. Inverter or NOT gate The NAND gate operates as an AND gate followed by a NOT gate. It acts in the manner of the logical operation “and” followed by negation. The output is “false” if both inputs are “true.” Otherwise, the output is “true.” NAND gate

 Input 1 Input 2 Output 1 1 1 1 1 1 1

The NOR gate is a combination OR gate followed by an inverter. Its output is “true” if both inputs are “false.” Otherwise, the output is “false.” NOR gate

 Input 1 Input 2 Output 1 1 1 1 1

The XNOR (exclusive-NOR) gate is a combination XOR gate followed by an inverter. Its output is “true” if the inputs are the same, and “false” if the inputs are different. XNOR gate

 Input 1 Input 2 Output 1 1 1 1 1 1

Complex operations can be performed using combinations of these logic gates. In theory, there is no limit to the number of gates that can be arrayed together in a single device. But in practice, there is a limit to the number of gates that can be packed into a given physical space.

#### What is the other name of NOT gate?

The other name of NOT gate is Inverter gate.

### Which is the universal gate?

NAND is the universal gate. Universal gates can implement any Boolean function without using any other type of gate. NAND and NOR gates are universal gates.

### What is a NOT gate in truth table and circuit diagram?

A NOT gate is a single input- and single output gate often called an ‘inverter’. A NOT gate performs logical negation on its input i.e if the input is true or logic 1, then the output will be false or logic zero. Likewise, a false or logic zero input results in a true or logic 1 output.

## What is a NOR gate equivalent to?

A NOR gate is equivalent to an inverted-input AND gate. An OR gate is equivalent to an inverted-input NAND gate. Two NOT gates in series are same as a buffer because they cancel each other as A” = A.

### What is the difference between AND gate and NOT gate?

AND gate is used to perform logical multiplication. The output of the AND gate is high(1) one and only if all the inputs are high(1),otherwise it is low(0). Not gate returns you the complement of the given input. If the given input is high(1),the output is low(0) and vice versa.

### What is the opposite of a NOT gate?

It’s called an identity gate. 