How many select lines will a 32:1 multiplexer will have
 (A) 5. (B) 8.
(C) 9. (D) 11.

1 Answer

Answer :

(A) 5.

Related questions

Description : The number of control lines for 32 to 1 multiplexer is (A) 4. (B) 5. (C) 16. (D) 6.

Last Answer : Ans: B The number of control lines for 32 (2^5) and to select one input among them total 5 select lines are required.

Description : How many select lines will a 16 to 1 multiplexer will have (A) 4 (B) 3 (C) 5 (D) 1

Last Answer : (A) 4

Description : The number of control lines for a 8 – to – 1 multiplexer is (A) 2 (B) 3 (C) 4 (D) 5

Last Answer : Ans: B The number of control lines for an 8 to 1 Multiplexer is 3 (The control signals are used to steer any one of the 8 inputs to the output)

Description : The number of control lines for 16 to 1 multiplexer is (A) 2. (B) 4. (C) 3. (D) 5.

Last Answer : (B) 4.

Description : The commercially available 8-input multiplexer integrated circuit in the TTL family is (A) 7495. (B) 74153. (C) 74154. (D) 74151.

Last Answer : Ans: B MUX integrated circuit in TTL is 74153.

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 : A device which converts BCD to Seven Segment is called (A) Encoder (B) Decoder (C) Multiplexer (D) Demultiplexer

Last Answer : Ans: B A device which converts BCD to Seven Segment is called DECODER. (A decoder coverts binary words into alphanumeric characters.)

Description : The device which changes from serial data to parallel data is (A) COUNTER (B) MULTIPLEXER (C) DEMULTIPLEXER (D) FLIP-FLOP

Last Answer : Ans: C The device which changes from serial data to parallel data is demultiplexer. (A demultiplexer takes in data from one line and directs it to any of its N outputs depending on the status of the select inputs.)

Description : Words having 8-bits are to be stored into computer memory. The number of lines required for writing into memory are (A) 1. (B) 2. (C) 4. (D) 8.

Last Answer : Ans: D Because 8-bit words required 8 bit data lines.

Description : A ring counter consisting of five Flip-Flops will have (A) 5 states (B) 10 states (C) 32 states (D) Infinite states.

Last Answer : Ans: A A ring counter consisting of Five Flip-Flops will have 5 states.

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

Last Answer : B) 2610

Description : The hexadecimal equivalent of decimal 32 is ________. 94) A) 1216 B) 2516 C) 3116 D) 2016

Last Answer : D) 2016

Description : What is the decimal value of 26? A) 128 B) 36 C) 32 D) 64

Last Answer : D) 64

Description : What is the decimal value of 25? 38) A) 10 B) 20 C) 16 D) 32

Last Answer : D) 32

Description : The decimal equivalent of the BCD value 0011 1001 0010 is ________. 32) A) 49010 B) 39210 C) 98210 D) 4131

Last Answer : B) 39210

Description : How many address bits are required to represent a 32 K memory (A) 10 bits. (B) 12 bits. (C) 14 bits. (D) 16 bits.

Last Answer : (D) 16 bits.

Description : What is the decimal value of 2-2? 11) A) 0.5 B) 0.125 C) 0.2 D) 0.25

Last Answer : D) 0.25

Description : The hexadecimal equivalent of a decimal 11 is ________. 26) A) "A" B) "B" C) "C" D) "D"

Last Answer : B) "B"

Description : The NOR gate output will be low if the two inputs are (A) 00 (B) 01 (C) 10 (D) 11

Last Answer : A

Description : The NAND gate output will be low if the two inputs are (A) 00 (B) 01 (C) 10 (D) 11

Last Answer : (D) 11

Description : How many address bits are required to represent 4K memory (A) 5 bits. (B) 12 bits. (C) 8 bits. (D) 10 bits.

Last Answer : (B) 12 bits.

Description : How many flip-flops are required to construct mod 30 counter (A) 5 (B) 6 (C) 4 (D) 8

Last Answer : (A) 5

Description : What is the decimal value of 2-3? 74) A) 0.25 B) 0.75 C) 0.125 D) 0.8

Last Answer : C) 0.125

Description : What numeric symbols are used in the binary number system? 58) A) 0 through 8 B) 0, 1, 2 C) 1, 2 D) 0, 1

Last Answer : D) 0, 1

Description : What is the decimal value of 23? 27) A) 4 B) 8 C) 2 D) 6

Last Answer : A) 00010000

Description : The decimal equivalent of binary 1010000 is ________. 8) A) 9610 B) 8010 C) 7810 D) 8410

Last Answer : A) 9610

Description : The decimal equivalent of binary 1010000 is ________. 8) A) 9610 B) 8010 C) 7810 D) 8410

Last Answer : A) 9610

Description : Which of the following memories stores the most number of bits (A) a 5M×8 memory. (B) a 1M × 16 memory. (C) a 5M × 4 memory. (D) a 1M ×12 memory.

Last Answer : Ans: A 5Mx8 = 5 x 220 x 8 = 40M (max)

Description : 1’s complement representation of decimal number of -17 by using 8 bit representation is (A) 1110 1110 (B) 1101 1101 (C) 1100 1100 (D) 0001 0001

Last Answer : (A) 1110 1110

Description : -8 is equal to signed binary number (A) 10001000 (B) 00001000 (C) 10000000 (D) 11000000

Last Answer : (A) 10001000

Description : Number of control lines required for 16 to 1 multiplexer is

Last Answer : Number of control lines required for 16 to 1 multiplexer is 4

Description : Convert the decimal number 10.5 to binary. 92) A) 1100.1000 B) 1010.0101 C) 1010.1000 D) 1011.1000

Last Answer : C) 1010.1000

Description : What is the decimal value of 2-1? 33) A) 0.1 B) 0.25 C) 0.5 D) 0.05

Last Answer : C) 0.5

Description : Convert octal 54 to decimal. 5) A) 6410 B) 5810 C) 7610 D) 4410

Last Answer : D) 4410

Description : The logic 0 level of a CMOS logic device is approximately (A) 1.2 volts (B) 0.4 volts (C) 5 volts (D) 0 volts

Last Answer : Ans: D CMOS logic low level is 0 volts approx.

Description : How many AND gates are required to realize Y = CD+EF+G (A) 4 (B) 5 (C) 3 (D) 2

Last Answer : 2

Description : If the input to T-flipflop is 100 Hz signal, the final output of the three T-flipflops in cascade is (A) 1000 Hz (B) 500 Hz (C) 333 Hz (D) 12.5 Hz.

Last Answer : (D) 12.5 Hz.

Description : How many Flip-Flops are required for mod–16 counter? (A) 5 (B) 6 (C) 3 (D) 4

Last Answer : (D) 4

Description : Implement F(A,B,C,D)= Ʃ (1,3,4,11,12,13,14,15) using multiplexer

Last Answer : • Implementation • Table • Explanation

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.