Recent questions tagged digital-electronics

Description : Define Asynchronous sequential circuit?

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

Description : Define synchronous sequential circuit

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

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

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.

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.

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.

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.

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’.

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.

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.

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.

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

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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

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

Last Answer : D) 118

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

Last Answer : C) 238

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

Last Answer : B) 5816

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

Last Answer : B) itself.

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

Last Answer : C) 1

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

Last Answer : D) 0001

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

Last Answer : D) 116

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

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

Last Answer : B) 2610

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

Last Answer : B) 9710

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

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

Last Answer : A) 19010

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

Last Answer : B) 3010

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

Last Answer : A) 8610

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

Last Answer : C) 25510

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

Last Answer : D) B216

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

Last Answer : B) 3478

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

Last Answer : C) 7110

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

Last Answer : C) 9910

Description : The binary equivalent of hexadecimal 10 is ________. 112) A) 00010000 B) 00110 C) 1010 D) 11000

Last Answer : A) 00010000

Description : Convert octal 64 to binary. 111) A) 1000000 B) 100000 C) 1111000 D) 110100

Last Answer : D) 110100

Description : The binary equivalent of hexadecimal 44 is ________. 110) A) 10011010 B) 01000100 C) 10001100 D) 01011000

Last Answer : B) 01000100

Description : Convert octal 152 to binary. 109) A) 011100010 B) 00111100 C) 01101010 D) 10101001

Last Answer : C) 01101010

Description : How many different symbols are used in the octal number system? 108) A) ten B) two C) seven D) eight

Last Answer : D) eight

Description : The binary equivalent of hexadecimal C0B is ________. 107) A) 110000001011 B) 110000001100 C) 110000001001 D) 110100001011

Last Answer : A) 110000001011

Description : Convert binary 110001100101 to octal. 106) A) 45778 B) 72458 C) 61458 D) 143118

Last Answer : C) 61458

Description : The hexadecimal equivalent of decimal 21 is ________. 105) A) 1516 B) 1016 C) 2116 D) 1216

Last Answer : A) 1516