The number of comparators required in a 3-bit comparator type analog to digital converter is

The number of comparators required in a 3-bit comparator type analog to digital converter is 

A) 2 B) 3 C) 7 D) 8 
by

2 Answers

Answer :

The number of comparators required in a 3-bit comparator type analog to digital converter is 8 

by

Answer :

Number of comparators =2^n -1= 2^3 -1=7
by

Related questions

The number of comparators required in a 4 bit comparator type ADC is

Description : The number of comparators required in a 4 bit comparator type ADC is (A) 16 (B) 15 (C) 17 (D) 12

Last Answer : The number of comparators required in a 4 bit comparator type ADC is 15

The conversation speed of an analog to digital converter is maximum with the following technique. (A) Dual slope AD converter. (B) Serial comparator AD converter. (C) Successive approximation AD converter. (D) Parallel comparator AD converter.

Description : The conversation speed of an analog to digital converter is maximum with the following technique. (A) Dual slope AD converter. (B) Serial comparator AD converter. (C) Successive approximation AD converter. (D) Parallel comparator AD converter.

Last Answer : (D) Parallel comparator AD converter.

A digital voltmeter uses an A/D converter which needs a start pulse, uses an analog comparator and has a...

Description : A digital voltmeter uses an A/D converter which needs a start pulse, uses an analog comparator and has a relatively fixed conversion time independent of the applied voltage. The A/D ... Successive Approximation Converter .b) Digital Ramp Converter c) Digital Slope Converter d) All the above

Last Answer : A digital voltmeter uses an A/D converter which needs a start pulse, uses an analog comparator and has a relatively fixed conversion time independent of the applied voltage. The A/D converter is : -  Successive Approximation Converter 

In successive approximation converter input to the comparator is through

Description : In successive approximation converter input to the comparator is through (A) DAC (B) Latch (C) Flip-flop (D) Sample and hold circuit

Last Answer : In successive approximation converter input to the comparator is through DAC 

The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B.

Description : The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is  (A) 4 (B) 6 (C) 8 (D) 10

Last Answer : The output Y of a 2-bit comparator is logic 1 whenever the 2-bit input A is greater than the 2-bit input B. The number of combinations for which the output is logic 1, is 6

Number of comparators required for an 8 bit flash ADC is:

Description : Number of comparators required for an 8 bit flash ADC is: (1) 8 (2) 16 (3) 255 (4) 256

Last Answer : Number of comparators required for an 8 bit flash ADC is: 255

In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB

Description : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB?  (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω

Last Answer : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB?  (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω

A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the...

Description : A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. What is the analog output for the input code 1010:  (1) 0.3125 V (2) 3.125 V (3) 0.78125 V (4) –3.125 V

Last Answer : 3.125V

Describe block diagram of digital comparator and write truth table of 2 bit comparator.

Description : Describe block diagram of digital comparator and write truth table of 2 bit comparator.

Last Answer : Digital comparator is a combinational circuit which compares two numbers, A and B; and evaluates their relative magnitudes. The outcome of the comparison is given by three binary variables which indicate whether A ... Depending on the result of comparison one of these outputs will go high.

Digital computers are more widely used as compared to analog computers, because they are

Last Answer : Digital computers are more widely used as compared to analog computers, because they are useful over wider ranges of problem types.

Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?

Last Answer : Receiver sensitivity.

What are the functions of a converter-comparator group?

Description : What are the functions of a converter-comparator group?

Last Answer : The comparator compares the signal strengths from the receivers and the converter converts the frequency-shift rf signal into a tty set dc loop control signal.

What is a Digital-to-Analog Converter (DAC) in Arduino?

Description : What is a Digital-to-Analog Converter (DAC) in Arduino?

Last Answer : A Digital-to-Analog Converter (DAC) in Arduino is a component that converts digital signals into analog signals, such as to control the output voltage to a motor or a speaker.

What is an Analog-to-Digital Converter (ADC) in Arduino?

Description : What is an Analog-to-Digital Converter (ADC) in Arduino?

Last Answer : An Analog-to-Digital Converter (ADC) in Arduino is a component that converts analog signals, such as temperature or light, into digital signals that can be processed by the microcontroller.

In a synchronous modem, the digital-to-analog converter transmits signal to the a. equilizer b. modulator c. demodulator d. terminal e. none of aobve

Description : In a synchronous modem, the digital-to-analog converter transmits signal to the a. equilizer b. modulator c. demodulator d. terminal e. none of aobve

Last Answer : equilizer

It is the ratio of the largest possible magnitude to the smallest possible magnitude that can be decoded by the digital-to-analog converter in the receiver.

Description : It is the ratio of the largest possible magnitude to the smallest possible magnitude that can be decoded by the digital-to-analog converter in the receiver.

Last Answer : Dynamic range

A weighted resistor digital to analog converter using N bits requires a total of (A) N precision resistors. (B) 2N precision resistors. (C) N + 1 precision resistors. (D) N – 1 precision resistors.

Description : A weighted resistor digital to analog converter using N bits requires a total of (A) N precision resistors. (B) 2N precision resistors. (C) N + 1 precision resistors. (D) N – 1 precision resistors.

Last Answer : (A) N precision resistors.

What is Analog to Digital Converter (ADC) ?

Description : What is Analog to Digital Converter (ADC) ?

Last Answer : Analog to Digital Converter (ADC)  Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.

Digital to Analog Converter (DAC)

Description : Digital to Analog Converter (DAC)

Last Answer : Digital to Analog Converter (DAC) Digital means binary (1 0) and 1 and 0 may be true and false or on and off or high and low. Analog means continuous signal or information ... wave. Phase Shift Keying (PSK) is transmit digital data by changing the phase of carrier wave.

A technique used by codes to convert an analog signal into a digital bit stream is known as A) Pulse code modulation B) Pulse stretcher C) Query processing D) Queue management

Description : A technique used by codes to convert an analog signal into a digital bit stream is known as A) Pulse code modulation B) Pulse stretcher C) Query processing D) Queue management

Last Answer : Answer : A

A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Description : A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Last Answer : a. Pulse code modulation

A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Description : A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Last Answer : a. Pulse code modulation

A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Description : A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management

Last Answer : a. Pulse code modulation

An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage ...

Description : An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be:  (1) 1.05V (2) 6.74V (3) 10.10V (4) 5.15V

Last Answer : An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be: 6.74V.

Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it is assumed that each sample requires 8 bits? (A) 32 kbps (B) 64 kbps (C) 128 kbps (D) 256 kbps

Description : Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it ... sample requires 8 bits? (A) 32 kbps (B) 64 kbps (C) 128 kbps (D) 256 kbps

Last Answer : (C) 128 kbps

Output comparators are used in (A) static testing of single module (B) dynamic testing of single module (C) static testing of single and multiple module (D) dynamic testing of single and multiple module

Description : Output comparators are used in (A) static testing of single module (B) dynamic testing of single module (C) static testing of single and multiple module (D) dynamic testing of single and multiple module

Last Answer : (D) dynamic testing of single and multiple module

How do I hook up my television analog converter?

Description : How do I hook up my television analog converter?

Last Answer : The 3 cords you hooked up, I assume are your A/V cords (red, white, yellow). Make sure your TV is turned to your A/V input.

Which of the following statements is NOT correct ? (A) Computer is capable of processing only digital signal (B) Computer is capable of analysing both quantitative and qualitative data (C) Appropriate software is required for processing the data (D) Computer is capable of processing digital as well as analog signals

Description : Which of the following statements is NOT correct ? (A) Computer is capable of processing only digital signal (B) Computer is capable of analysing both quantitative and qualitative data (C) Appropriate ... for processing the data (D) Computer is capable of processing digital as well as analog signals

Last Answer : Answer: A

Which of the following steps is/are not required for analog to digital conversion ? (a) Sensing (b) Conversion (c) Amplification (d) Conditioning (e) Quantization Codes : (A) (a) and (b) (B) (c) and (d) (C) (a), (b) and (e) (D) None of the above

Description : Which of the following steps is/are not required for analog to digital conversion ? (a) Sensing (b) Conversion (c) Amplification (d) Conditioning (e) Quantization Codes : (A) (a) and (b) (B) (c) and (d) (C) (a), (b) and (e) (D) None of the above

Last Answer : (D) None of the above

Compare analog instrument to digital instrument on the basis of accuracy, resolution, power required and portability.

Description : Compare analog instrument to digital instrument on the basis of accuracy, resolution, power required and portability. 

Last Answer : Comparison between Analog instruments & Digital instruments: 

A four bit number is given as 0110. Its 2’s complement is

Last Answer : A four bit number is given as 0110. Its 2’s complement is 1010.

A 4 bit counter is used to count from 0,1,2...n. Value of “n” is

Description : A 4 bit counter is used to count from 0,1,2...n. Value of “n” is

Last Answer : A 4 bit counter is used to count from 0,1,2...n. Value of “n” is 15

Parity bit check is used to

Description : Parity bit check is used to

Last Answer : Parity bit check is used to Detect 1 bit error

In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor

Description : In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be (A) 0.4 kΩ (B) 3 kΩ (C) 2.8 kΩ (D) 2.5 kΩ

Last Answer : In a 5 bit weighted resistor D/A converters, the resistor value corresponding to LSB is 40 kΩ, and the resistor value corresponding to MSB will be 2.5 kΩ 

Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, ...

Description : Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is

Last Answer : Assuming 8 bits for data, 1 bit for parity, I start bit and 2 stop bits, the number of characters that 1200 BPS communication line can transmit is 12CPS.

Consider the representation of six-bit numbers by two’s complement,...

Description : Consider the representation of six-bit numbers by two’s complement, one’s complement, or by sign and magnitude: In which representation is there overflow from the addition of the integers 011000 and 011000?

Last Answer : Two’s complement, Sign and magnitude and one’s complement, Two’s complement and one’s complement

A six-bit alpha-numeric code is able to code?

Last Answer : A six-bit alpha-numeric code is able to code 64 characters.

A 12 bit counter type A/D converter uses a 1 MHz clock. If the full scale output is +10V, its resolution output is

Last Answer : A 12 bit counter type A/D converter uses a 1 MHz clock. If the full scale output is +10V, its resolution output is 2.44mV.

An 8 bit converter type A/D converter makes at least 8000conversions/sec. The clock frequency used is

Last Answer : An 8 bit converter type A/D converter makes at least 8000conversions/sec. The clock frequency used is 2MHz.

A 12 bit counter type A/D converter uses a 1 MHz clock. Its maximum conversion time is

Last Answer : A 12 bit counter type A/D converter uses a 1 MHz clock. Its maximum conversion time is 4096μs.

Which of the following voltage is used represent binary '1' in digital circuits .

Description : Which of the following voltage is used represent binary '1' in digital circuits .   1.0 V 2. 15 V 3. +5 V 4. 25 V 

Last Answer : Which of the following voltage is used represent binary '1' in digital circuits .   1.0 V 2. 15 V 3. +5 V 4. 25 V 

What is not true in the context of “Don’t Care Condition” in digital logic ?

Description : What is not true in the context of “Don’t Care Condition” in digital logic ? (A) It corresponds to combination of logic variables whose value is not defined (B) It can be assumed to be 0 or 1 (C) It can be assumed to be 1 only (D) It helps in simplification of logic function

Last Answer : What is not true in the context of “Don’t Care Condition” in digital logic ? (A) It corresponds to combination of logic variables whose value is not defined (B) It can be assumed to be 0 or 1 (C) It can be assumed to be 1 only (D) It helps in simplification of logic function

An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are ............... and .............. (A) 4000 bauds \ sec & 1000 bps (B) 2000 bauds \ sec & 1000 bps (C) 1000 bauds \ sec & 500 bps (D) 1000 bauds \ sec & 4000 bps

Description : An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are ............... and .............. (A) 4000 bauds \ sec & ... (B) 2000 bauds \ sec & 1000 bps (C) 1000 bauds \ sec & 500 bps (D) 1000 bauds \ sec & 4000 bps

Last Answer : (D) 1000 bauds \ sec & 4000 bps Explanation: Bit rate is the number of bits per second. Baud rate is the number of signal units per second. Baud rate is less than or equal to the bit rate. Baud rate = 1000 bauds per second (baud/s) Bit rate = 1000 x 4 = 4000 bps

An analog signal has a bit rate of 6000 bps and a baud rate of 2000 baud. How many data elements are carried by each signal element ? (A) 0.336 bits/baud (B) 3 bits/baud (C) 120,00,000 bits/baud (D) None of the above

Description : An analog signal has a bit rate of 6000 bps and a baud rate of 2000 baud. How many data elements are carried by each signal element ? (A) 0.336 bits/baud (B) 3 bits/baud (C) 120,00,000 bits/baud (D) None of the above

Last Answer : (B) 3 bits/baud

The percent resolution of an 8 -bit D/A converter is

Description : The percent resolution of an 8 -bit D/A converter is

Last Answer : The percent resolution of an 8 -bit D/A converter is 0.392

For a certain 4 bit successive approximation A/D converter, the maximum ...

Last Answer : For a certain 4 bit successive approximation A/D converter, the maximum ladder output is +8V. if a constant +6V is applied to the analog input the sequence of binary states for the SA register is 0110.

The resolution of a 12 bit D/A converter using a binary ladder is

Last Answer : The resolution of a 12 bit D/A converter using a binary ladder is 0.02%.

The conversion time of a 12 bit successive approximation A/D converter using a 1 MHz clock is

Last Answer : The conversion time of a 12 bit successive approximation A/D converter using a 1 MHz clock is 12μs.

Find out number of data lines required to interface 16 LEDs arrange in the 4 x 4 matrix form.

Description : Find out number of data lines required to interface 16 LEDs arrange in the 4 x 4 matrix form.

Last Answer : 4+4=8, eight lines are required for 4x4 matrix of 16 LEDs

How many minimum number of NOR gates are required to realize a two-input X-OR gate?

Description : How many minimum number of NOR gates are required to realize a two-input X-OR gate?

Last Answer : 5