What type of adder is used to handle a carry from a previous circuit?

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What type of adder is used to handle a carry from a previous circuit?

asked Aug 20, 2021 by anonymous

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Which of the following statements are true ? I. A circuit that adds two bits, producing a sum bit and a carry bit is called half adder. II. A circuit that adds two bits, producing a sum bit and a carry bit is called full adder. III. A circuit that adds two bits and a carry bit producing a sum bit and a carry bit is called full adder. IV. A device that accepts the value of a Boolean variable as input and produces its complement is called an inverter. (A) I & II (B) II & III (C) I, II, III (D) I, III & IV

Description : Which of the following statements are true ? I. A circuit that adds two bits, producing a sum bit and a carry bit is called half adder. II. A circuit that adds two bits, producing a sum bit and a carry bit is called full adder. ... an inverter. (A) I & II (B) II & III (C) I, II, III (D) I, III & IV

Last Answer : (D) I, III & IV

What is the difference between a summing amplifier and an adder circuit?

Description : What is the difference between a summing amplifier and an adder circuit?

Last Answer : The adder simply adds the input signals together while the summing amplifier multiplies the sum of the input signals by the gain of circuit.

What type of logic gates are added to a parallel adder to enable it to subtract?

Description : What type of logic gates are added to a parallel adder to enable it to subtract?

Last Answer : X-OR gates.

An X-OR gate may be used as what type of adder?

Description : An X-OR gate may be used as what type of adder?

Last Answer : Quarter adder.

What is a carry look-ahead adder?

Description : What is a carry look-ahead adder?

Last Answer : The input carry needed by a stage is directly computed from carry signals obtained from all the preceding stages i-1,i-2,.....0, rather than waiting for normal carries to supply slowly from stage to stage. An adder that uses this principle is a called carry look-ahead adder.

The size of the ROM required to build an 8-bit adder/subtractor with mode control, carry input, carry output and two’s complement overflow output is given as

Description : The size of the ROM required to build an 8-bit adder/subtractor with mode control, carry input, carry output and two’s complement overflow output is given as

Last Answer : (B) 218 × 10

Consider a full-adder with the following input values: (a) x=1, y=0 and Ci(carry input) = 0 (b) x=0, y=1 and Ci = 1 Compute the values of S(sum) and C0 (carry output) for the above input values. (A) S=1 , C0= 0 and S=0 , C0= 1 (B) S=0 , C0= 0 and S=1 , C0= 1 (C) S=1 , C0= 1 and S=0 , C0= 0 (D) S=0 , C0= 1 and S=1 , C0= 0

Description : Consider a full-adder with the following input values: (a) x=1, y=0 and Ci(carry input) = 0 (b) x=0, y=1 and Ci = 1 Compute the values of S(sum) and C0 (carry output) for the above input values. (A) S=1 , C0= 0 and ... C0= 1 (C) S=1 , C0= 1 and S=0 , C0= 0 (D) S=0 , C0= 1 and S=1 , C0= 0

Last Answer : (A) S=1 , C0= 0 and S=0 , C0= 1

The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits:

Description : The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits: (1) Increase ripple delay (2) Add a 1 to complemented inputs (3) Reduce propagation delay (4) Determine sign and magnitude

Last Answer : The fast carry or look-ahead carry circuits found in most 4-bit parallel-adder circuits: Reduce propagation delay.

. What will be the output of a half adder when both inputs are 1s?

Description : . What will be the output of a half adder when both inputs are 1s?

Last Answer : Sum equals 0 with a carry of 1.

What advantage does a half adder have over a quarter adder?

Description : What advantage does a half adder have over a quarter adder?

Last Answer : The half adder generates a carry.

Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier. a. Circuit A has more gates than circuit B b. Circuit B has more gates than circuit A c. Circuit A has the same number of gates as circuit B

Description : Circuit A is a 1-bit adder; circuit B is a 1 bit multiplier. a. Circuit A has more gates than circuit B b. Circuit B has more gates than circuit A c. Circuit A has the same number of gates as circuit B

Last Answer : a. Circuit A has more gates than circuit

A full adder logic circuit will have (A) Two inputs and one output. (B) Three inputs and three outputs. (C) Two inputs and two outputs. (D) Three inputs and two outputs.

Description : A full adder logic circuit will have (A) Two inputs and one output. (B) Three inputs and three outputs. (C) Two inputs and two outputs. (D) Three inputs and two outputs.

Last Answer : Ans: D A full adder circuit will add two bits and it will also accounts the carry input generated in the previous stage. Thus three inputs and two outputs (Sum and Carry) are there.

Which of the following is a sequential circuit? (A) Multiplexer (B) Decoder (C) Counter (D) Full adder

Description : Which of the following is a sequential circuit? (A) Multiplexer (B) Decoder (C) Counter (D) Full adder

Last Answer : (C) Counter

Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.

Description : Describe how Op-Amp is used as adder using circuit diagram and output voltage equation.

Last Answer : Summing Amplifier Circuit In this simple summing amplifier circuit, the output voltage, ( Vout ) now becomes proportional to the sum of the input voltages, V1, V2, V3, etc. Then we can ... to the non-inverting input of the op-amp, it will produce the positive sum of the input voltages.

A full adder is a combinational circuit that performs the arithmetic sum of three input bits and produces a

Description : A full adder is a combinational circuit that performs the arithmetic sum of three input bits and produces a (a) sum output (b) sum output and a carry (c) sum output with two carries (d) two sums with two carries

Last Answer : A full adder us an a combination logical circuit which will produces an sum and carry when ever more than two inputs were given.

Whoever, being employed to carry or deliver any mail bag or any postal article in course of transmission by post, voluntarily withdraws from the duties of his office without permission or without having given one month's previous notice in writing a) Punishable with fine which may extend to fifty rupees b) Punishable with imprisonment which may extend to one month, or with fine which may extend to hundred rupees, or with both. c) Punishable with imprisonment which may extend to one month, or with fine which may extend to fifty rupees, or with both. d) None of the above

Description : Whoever, being employed to carry or deliver any mail bag or any postal article in course of transmission by post, voluntarily withdraws from the duties of his office without permission or without having given one ... with fine which may extend to fifty rupees, or with both. d) None of the above

Last Answer : c) Punishable with imprisonment which may extend to one month, or with fine which may extend to fifty rupees, or with both.

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The correction to be applied in decimal adder to the generated sum is (A) 00101 (B) 00110 (C) 01101 (D) 01010

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