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INVERTER gate
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What is system logic?
A positive logic system will output true only when the input is true. A negative logic system will output true only when the input is false. The NOT logic gate is an example of a negative logic system. That is, NOT( false ) will output true.
Why diode logic gate is not suitable for cascading operation?
the pullup or pull down resistance in the diode logic gate makes it a high output resistance device.If u try to drive another diode logic gate with it the output voltage of the first gate will be affected by the resistance in the second gate.A diode logic gate should always drive a high input resistance input.
Which logic gate have output high if and only if all inputs are low?
A nor gate provides an output of 0 when any input is 1.Nor gate provides the opposite of or gate. An or gate provides a 1 or true output when any of the inputs is 1 or true. Therefore the opposite output would be provided by a nor gate.
How can you replace a NOT function by using NAND gate?
Short the inputs together. Logic: A High input, with the inputs shorted together, will be H+H at the input side of the NAND gate, therefore resulting in a low output. A Low input, with both inputs shorted together, is L+L for inputs, resulting in a High output. Also, a NOR gate can be used in exactly the same way.
What is propagation delay in flip flops?
Propagation Delay In digital logic, every gate has got some finite amount of delay because of which the change in the output is not instantaneous to the change in the input. In simple terms, the times it takes for an input to appear at the output is called the propagation delay. In Figure 6, tPHL, describes the time it takes for an input to cause the output to change from logic-level-high to logic-level-low. Similarly, tPLH, refers to the delay associated when an input change causes the output to change from logic-level-low to logic-level-high. The overall delay is average of these two delays.
When is that the NA ND logic gate can function as a NOT logic gate?
The NAND gate has two or more inputs, and one output. This output is the complement of the AND of all the bits and will only be 0 if all the inputs are 1.A NOT gate on the other hand has only 1 input, and the output is the complement of this input.So to make a NAND gate into a NOT gate, we should tie (short, connect to same value) all the inputs of the NAND gate. At the output we would have the complement of the signal given at the tied inputs.This way we have a NOT gate from a NAND gate.
Which logic gate has the output is compliment of its input?
inverter gate
What is the function of the NOT logic gate?
The NOT gate is also called an "inverter", as its output is always the complement of the input. That is, if the input is TRUE then the output is FALSE else the output is TRUE end if). Its implementation electronically is not much different than that of an analog inverting amplifier, except that the gate is deliberately designed to operate nonlinear and change rapidly from one state to another.
What is system logic?
A positive logic system will output true only when the input is true. A negative logic system will output true only when the input is false. The NOT logic gate is an example of a negative logic system. That is, NOT( false ) will output true.
What logic gate might be called the all or nothing gate?
AND gate is an all or nothing gate because in able to have an output of logic 1,all of the input must be all logic 1 or else the output will be nothing or simply logic 0.
What is negative logic system?
A positive logic system will output true only when the input is true. A negative logic system will output true only when the input is false. The NOT logic gate is an example of a negative logic system. That is, NOT( false ) will output true.
What is a four input and gate?
A four input and gate is a logic gate with four inputs. The output is true only when all four inputs are true.
Why diode logic gate is not suitable for cascading operation?
the pullup or pull down resistance in the diode logic gate makes it a high output resistance device.If u try to drive another diode logic gate with it the output voltage of the first gate will be affected by the resistance in the second gate.A diode logic gate should always drive a high input resistance input.
What converts input into output?
An operator, a function, a processor, a logic gate, a manufacturer - it depends on the context.
What is a standard single logic gate?
A logic gate is an elementary building block of a digital circuit. Most logic gateshave two inputs and one output. ... The following illustration and table show the circuit symbol and logic combinations for an AND gate. (In the symbol, the input terminals are at left and the output terminal is at right.)
Why an open ttl gate behaves as a logic high input?
because TTL have a bias input setup to eliminate noise therefore the output will follow the logic one input if left open
What is OR gate in logic gate?
1. NAND gate is used to invert the input A (by connecting A to both inputs). 2. NAND gate used to invert B the same way 3. Now put A' and B' into into a third NAND gate. The output will be (A'B')' which is equivalent to A+B.
