Define Half adder and full adder

Define Half adder and full adder
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The logic circuit that performs the addition of two bits is a half adder. The circuit that  performs the addition of three bits is a full adder.
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The gates required to build a half adder are (A) EX-OR gate and NOR gate (B) EX-OR gate and OR gate (C) EX-OR gate and AND gate (D) Four NAND gates.

Description : The gates required to build a half adder are (A) EX-OR gate and NOR gate (B) EX-OR gate and OR gate (C) EX-OR gate and AND gate (D) Four NAND gates.

Last Answer : (C) EX-OR gate and AND gate

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.

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

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

Last Answer : Ans: B The correction to be applied in decimal adder to the generated sum is 00110. When the four bit sum is more than 9 then the sum is invalid. In such cases, add +6(i.e. 0110) to the ... the six invalid states. If a carry is generated when adding 6, add the carry to the next four bit group .

Define half adder and full adder

Description : Define half adder and full adder

Last Answer : The logic circuit that performs the addition of two bits is a half adder. The circuit that performs the addition of three bits is a full adder.

Define Asynchronous sequential circuit?

Description : Define Asynchronous sequential circuit?

Last Answer : In asynchronous sequential circuits change in input signals can affect memory element at any instant of time.

Define synchronous sequential circuit

Description : Define synchronous sequential circuit

Last Answer : In synchronous sequential circuits, signals can affect the memory elements only at discrete instant of time.

Define shift registers.

Description : Define shift registers.

Last Answer : The binary information in a register can be moved from stage to stage within the register or into or out of the register upon application of clock ... arithmetic and logic operations used in microprocessors. This gives rise to group of registers called shift registers.

Define registers.

Description : Define registers.

Last Answer : A register is a group of flip-flops flip-flop can store one bit information. So an n-bit register has a group of n flip-flops and is capable of storing any binary information/number containing n-bits.

Define race around condition.

Description : Define race around condition.

Last Answer : In JK flip-flop output is fed back to the input. Therefore change in the output results change in the input. Due to this in the positive half of the clock pulse if both J and K are high then output toggles continuously. This condition iscalled ‘race around condition’.

Define Flip flop.

Description : Define Flip flop.

Last Answer : The basic unit for storage is flip flop. A flip-flop maintains its output state either at 1 or 0 until directed by an input signal to change its state.

Define multiplexer

Description : Define multiplexer

Last Answer : Multiplexer is a digital switch. If allows digital information from several sources to be routed onto a single output line.

Define Encoder?

Description : Define Encoder?

Last Answer : An encoder has 2n input lines and n output lines. In encoder the output lines generate the binary code corresponding to the input value.

Define Decoder

Description : Define Decoder

Last Answer : A decoder is a multiple - input multiple output logic circuit that converts coded inputs into coded outputs where the input and output codes are different.

Define combinational logic

Description : Define combinational logic

Last Answer : When logic gates are connected together to produce a specified output for certain specified combinations of input variables, with no storage involved, the resulting circuit is called combinational logic.

The BCD adder to add two decimal digits needs minimum of (A) 6 full adders and 2 half adders (B) 5 full adders and 3 half adders (C) 4 full adders and 3 half adders (D) 5 full adders and 2 half adders

Description : The BCD adder to add two decimal digits needs minimum of (A) 6 full adders and 2 half adders (B) 5 full adders and 3 half adders (C) 4 full adders and 3 half adders (D) 5 full adders and 2 half adders

Last Answer : (D) 5 full adders and 2 half adders

. 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.

A half adder can be constructed from

Description : A half adder can be constructed from

Last Answer : A half adder can be constructed from One XOR gate and one 'AND‘ gate with their input connected in parallel

What are the different types of shift type?

Description : What are the different types of shift type?

Last Answer : There are five types. They are, Serial In Serial Out Shift Register Serial In Parallel Out Shift Register Parallel In Serial Out Shift Register Parallel In Parallel Out Shift Register Bidirectional Shift Register

What is a master-slave flip-flop?

Description : What is a master-slave flip-flop?

Last Answer : A master-slave flip-flop consists of two flip-flops where one circuit serves as a master and the other as a slave.

What is edge-triggered flip-flop?

Description : What is edge-triggered flip-flop?

Last Answer : The problem of race around condition can solved by edge triggering flip flop. The term edge triggering means that the flip-flop changes state either at the positive ... negative edge of the clock pulse and it is sensitive to its inputs only at this transition of the clock.

What is the operation of T flip-flop?

Description : What is the operation of T flip-flop?

Last Answer : T flip-flop is also known as Toggle flip-flop. • When T=0 there is no change in the output. • When T=1 the output switch to the complement state (ie) the output toggles.

What is the operation of JK flip-flop?

Description : What is the operation of JK flip-flop?

Last Answer : When K input is low and J input is high the Q output of flip-flop is set. When K input is high and J input is low the Q output of flip-flop is reset. When both the inputs ... are high it is possible to set or reset the flip-flop (ie) the output toggle on the next positive clock edge.

What is the operation of D flip-flop?

Description : What is the operation of D flip-flop?

Last Answer : In D flip-flop during the occurrence of clock pulse if D=1, the output Q is set and if D=0, the output is reset.

What are the different types of flip-flop?

Description : What are the different types of flip-flop?

Last Answer : There are various types of flip flops. Some of them are mentioned below they are, RS flip-flop SR flip-flop D flip-flop JK flip-flop T flip-flop

What are the classification of sequential circuits?

Description : What are the classification of sequential circuits?

Last Answer : The sequential circuits are classified on the basis of timing of their signals into two types. They are, 1)Synchronous sequential circuit. 2)Asynchronous sequential circuit.

What do you mean by comparator

Description : What do you mean by comparator

Last Answer : A comparator is a special combinational circuit designed primarily to compare the relative magnitude of two binary numbers.

What is priority Encoder?

Description : What is priority Encoder?

Last Answer : A priority encoder is an encoder circuit that includes the priority function. In priority encoder, if 2 or more inputs are equal to 1 at the same time, the input having the highest priority will take precedence.

What is binary decoder?

Description : What is binary decoder?

Last Answer : A decoder is a combinational circuit that converts binary information from n input lines to a maximum of 2n out puts lines.

Convert the decimal number 3.375 to binary. 132) A) 0101.1100 B) 0011.1010 C) 0011.0011 D) 0011.01

Description : Convert the decimal number 3.375 to binary. 132) A) 0101.1100 B) 0011.1010 C) 0011.0011 D) 0011.01

Last Answer : D) 0011.01

Convert binary 1001 to octal. 131) A) 1018 B) 98 C) 108 D) 118

Description : Convert binary 1001 to octal. 131) A) 1018 B) 98 C) 108 D) 118

Last Answer : D) 118

Convert decimal 19 to octal. 130) A) 278 B) 218 C) 238 D) 178

Description : Convert decimal 19 to octal. 130) A) 278 B) 218 C) 238 D) 178

Last Answer : C) 238

The hexadecimal equivalent of decimal 88 is ________. 129) A) 6816 B) 5816 C) 5116 D) 551

Description : The hexadecimal equivalent of decimal 88 is ________. 129) A) 6816 B) 5816 C) 5116 D) 551

Last Answer : B) 5816

Any number with an exponent of one is equal to 128) A) two. B) itself. C) zero. D) on

Description : Any number with an exponent of one is equal to 128) A) two. B) itself. C) zero. D) on

Last Answer : B) itself.

What is the decimal value of 20? 127) A) 2 B) 0 C) 1 D) 3

Description : What is the decimal value of 20? 127) A) 2 B) 0 C) 1 D) 3

Last Answer : C) 1

The binary equivalent of hexadecimal 16 is ________. 126) A) 01110000 B) 1100001 C) 0010011 D) 0001

Description : The binary equivalent of hexadecimal 16 is ________. 126) A) 01110000 B) 1100001 C) 0010011 D) 0001

Last Answer : D) 0001

Convert binary 01001110 to octal. 125) A) 1078 B) 768 C) 1068 D) 116

Description : Convert binary 01001110 to octal. 125) A) 1078 B) 768 C) 1068 D) 116

Last Answer : D) 116

The decimal equivalent of the BCD value 0111 0110 1000 is ________. 124) A) 70810 B) 17210 C) 76810 D) 6871

Description : The decimal equivalent of the BCD value 0111 0110 1000 is ________. 124) A) 70810 B) 17210 C) 76810 D) 6871

Last Answer : C) 76810

Convert octal 32 to decimal. 123) A) 3010 B) 2610 C) 1610 D) 3201

Description : Convert octal 32 to decimal. 123) A) 3010 B) 2610 C) 1610 D) 3201

Last Answer : B) 2610

The decimal equivalent of binary 01100001 is ________. 122) A) 9110 B) 9710 C) 11510 D) 10110

Description : The decimal equivalent of binary 01100001 is ________. 122) A) 9110 B) 9710 C) 11510 D) 10110

Last Answer : B) 9710

Convert the binary number 0001.0010 to decimal. 121) A) 1.20 B) 1.40 C) 1.125 D)

Description : Convert the binary number 0001.0010 to decimal. 121) A) 1.20 B) 1.40 C) 1.125 D)

Last Answer : C) 1.125

The decimal equivalent of binary 10111110 is ________. 120) A) 19010 B) 20010 C) 18610 D) 1

Description : The decimal equivalent of binary 10111110 is ________. 120) A) 19010 B) 20010 C) 18610 D) 1

Last Answer : A) 19010

The decimal equivalent of hexadecimal 1E is ________. 119) A) 3510 B) 3010 C) 2910 D) 21

Description : The decimal equivalent of hexadecimal 1E is ________. 119) A) 3510 B) 3010 C) 2910 D) 21

Last Answer : B) 3010

The decimal equivalent of the BCD value 1000 0110 is ________. 118) A) 8610 B) 7610 C) 8810 D) 8110

Description : The decimal equivalent of the BCD value 1000 0110 is ________. 118) A) 8610 B) 7610 C) 8810 D) 8110

Last Answer : A) 8610

The decimal equivalent of hexadecimal FF is ________. 117) A) 25010 B) 24010 C) 25510 D) 22510

Description : The decimal equivalent of hexadecimal FF is ________. 117) A) 25010 B) 24010 C) 25510 D) 22510

Last Answer : C) 25510

The hexadecimal equivalent of a binary 10110010 is ________. 116) A) E216 B) A216 C) C216 D) B216

Description : The hexadecimal equivalent of a binary 10110010 is ________. 116) A) E216 B) A216 C) C216 D) B216

Last Answer : D) B216

Convert binary 11100111 to octal. 115) A) 3508 B) 3478 C) 3178 D) 7138

Description : Convert binary 11100111 to octal. 115) A) 3508 B) 3478 C) 3178 D) 7138

Last Answer : B) 3478

Convert octal 107 to decimal. 114) A) 7710 B) 10110 C) 7110 D) 9710

Description : Convert octal 107 to decimal. 114) A) 7710 B) 10110 C) 7110 D) 9710

Last Answer : C) 7110

The decimal equivalent of the BCD value 1001 1001 is ________. 113) A) 9310 B) 9510 C) 9910 D) 8910

Description : The decimal equivalent of the BCD value 1001 1001 is ________. 113) A) 9310 B) 9510 C) 9910 D) 8910

Last Answer : C) 9910