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The worst case time between:

  1. application of valid new stable values on the adder's inputs
  2. the development of the valid new stable carry on the adder's carry output
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Q: What is carry propagation time in adder circuit?
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How can Propagation delay be avoided in a parallel adder?

The parallel adder which we use in the digital circuits ,the carry output of each full adder stage is connected to the carry input of the next higher order stage.therefore,the sum and carry outputs of any stage cannot be produced until the input carry occurs; This leads to a time delay in the addition process.This delay is known as carry propagation delay. to the second question the propagation delay can be avoided in the binary parallel adder with the help of look ahead carry generator .............................................................................................................................


How does a half adder work?

A full adder has three inputs - A, B, and CarryIn from the prior stage. It generates a Result and a Carryout with the truth table... ABC-RC 000-00 001-10 010-10 011-01 100-10 101-01 110-01 111-11 The adder can be a ripple adder, in which the propogation delay depends on the carry "rippling" through the logic, or it can be a look-ahead-carry type, which has constant propagation delay time, at the expense of more logic.


What is the difference between Serial and Parallel Adder?

Some key differences between a Serial and Parallel Adder are that a Serial Adder is slower, a Parallel adder is a combinational circuit and the time required for addition depends on the number of bits in a Serial, but not a Parallel. A Serial Adder is a sequential circuit while a Parallel is a combinational circuit.


What are the disadvantages of ripple carry adder?

time delay


Advantages of fast adder over parallel binary adder?

serial adder: 1) Slower 2) It uses shift registers 3) IT requires one full adder circuit. 4) It is sequential circuit. 5) Time required for addition depends on number of bits. Parallel adder: 1) Faster 2) It uses registers with parallel load capacity 3) No. of full adder circuit is equal to no. of bits in binary adder. 4)It is a combinational circuit 5)Time required does not depend on the number of bits


Difference between adder and parallel adder?

1.serial adder add bits serially but parallel adder add bits at the same time . 2.serial adder depends on previous outputs but parallel adder does not depends on previous outputs . 3.parallel adder takes less time to execute compared to serial adder.


What best defines propagation delay?

Propagation delay is the time it takes for electronic devices to switch from one logic state to another.


What is propagation Time?

A: A transistor when is switched on there are delay caused by junction capacitance turning it off these same capacitance must be discharges causing delays in total response it is constant situation however as frequency increases it becomes troublesome


What is the function of an adder in a color television?

To compile to amount of time you spend watching the vile beast.


What is the propagation time of a sound pulse?

Propagation time of any pulse is roughly the time needed for the leading edge of the pulse to travel from one point to another. It will be more accurate to say that the pulse is registered at a given point when its leading edge reaches half of the maximum value (amplitude) of the pulse. The propagation time of a sound pulse is equal to the distance between the measuring points divided to the sound velocity in the medium in which it propagates.


What is the propagation time of a sound?

Propagation time of any pulse is roughly the time needed for the leading edge of the pulse to travel from one point to another. It will be more accurate to say that the pulse is registered at a given point when its leading edge reaches half of the maximum value (amplitude) of the pulse. The propagation time of a sound pulse is equal to the distance between the measuring points divided to the sound velocity in the medium in which it propagates.


How has plant propagation played a part in agriculture?

Increased efficiency in plant propagation has decreased the amount of human time involved in agriculture. This has expanded mans ability to explore and expand civilization.