Computer Knowledge

Digital Logic and Microprocessors

735 Questions

Digital logic and microprocessors form the core of computer science, covering logic gates, combinational and sequential circuits, and CPU architecture. These topics are crucial for computer knowledge sections in technical exams. Test your digital electronics basics here.

Logic gates and circuitsCombinational vs sequential circuitsMicroprocessor instructionsTruth tables and boolean functions

Digital Logic and Microprocessors Questions

Multiple choice meaning and elements of computer system computer in accounting accountancy

In a 4 bit weighted register D/A converter, the register value corresponding to LSB is $32K\Omega$ the register value corresponding to MSB will be _________________.

  1. $32\Omega$
  2. $16\Omega$
  3. $8\Omega$
  4. $4\Omega$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a 4 bit weighted register D/A converter, the register value corresponding to LSB is 32KΩ the register value corresponding to MSB will be 4Ω.

In the weighted resistor type DAC, each digital level is converted into an equivalent analog voltage or current.

 

DAC converter produces an output current of voltage proportional to digital quantity to its output. In the circuit op-amp is used as current to voltage converter.

Signals can easily be stored and transmitted in digital form; a DAC is used for the signal to be recognized by human senses or non-digital systems.

 

Multiple choice meaning and elements of computer system computer in accounting accountancy

Which one is not changeable instruction __________.

  1. DCR

  2. MVI

  3. LXI

  4. SHLD
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

DCR is not changeable instruction.

DCR means Dynamic Contrast Ratio. Contrast ratio is the difference between light and dark on a screen, expressed by a number. If we take the brightest white on a screen, and the darkest black and compare the luminosity, we get the contrast ratio.

Design change request, also Document Change Request and Database Change Request.

Multiple choice meaning and elements of computer system computer in accounting accountancy

Resolution of 10bit ADC is ____________.

  1. 1 ms

  2. 10 ms

  3. 100 ms

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Resolution of 10 bit ADC is 1ms.

The only way to increase resolution without reducing the range is to use an ADC with more bits. A 10-bit ADC has 2^10, or 1,024 possible output codes. There is no switching of IP channels and there is at least 1ms between enabling the ADC and starting the conversion.

The ADC reports a ratio metric value. This means that the ADC assumes 5V is 1023 and anything less than 5V will be a ratio between 5V and 1023. Analog to digital conversions are dependent on the system voltage.

An analog to digital converter (ADC) is an electronic device which converts varying analog signals into digital signals so that they can easily be read by the digital devices.

 

Multiple choice elements of accounts overview of computerised accounting system accounting software concepts and types of computerized accounting system types of accounting software

______________ performs logical operations involving comparisons among variables and data items.

  1. Arithmetic and Logic unit

  2. Memory unit

  3. Control unit

  4. Both b and c
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Arithmetic and Logic Unit (ALU) performs all mathematical calculations and logical comparisons within the CPU.

Multiple choice civics introduction to gst fundamentals of gst tax journal

Input IGST has to be first set-off against output ___________.

  1. CGST

  2. SGST

  3. IGST

  4. Both (A) & (B)
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

According to the GST set-off rules, Input IGST must first be utilized to pay off the Output IGST liability before it can be used for CGST or SGST.

Multiple choice civics introduction to gst fundamentals of gst tax journal

Input SGST can be set-off first against output ___________.

  1. CGST

  2. SGST

  3. IGST

  4. none of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Input SGST is primarily used to set off Output SGST. If any balance remains, it can then be used to set off Output IGST.

Multiple choice civics introduction to gst fundamentals of gst tax journal

Excess of input CGST after setting-off against output CGST, can be utilised for setting-off output ___________. 

  1. CGST

  2. SGST

  3. IGST

  4. all of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After exhausting the Output CGST liability, any remaining Input CGST credit can be utilized to set off Output IGST liability.

Multiple choice civics introduction to gst fundamentals of gst tax journal

Give the order in which the input IGST can be set off against the following types of output GST:
1. CGST
2. SGST
3. IGST.

  1. 1, 2, 3

  2. 3, 2, 1

  3. 1, 3, 2

  4. 3, 1, 2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The order for utilizing Input IGST is: first against Output IGST, then against Output CGST, and finally against Output SGST.

Multiple choice civics introduction to gst fundamentals of gst tax journal

Excess of input SGST after setting off the output SGST, can be utilised against output ________.

  1. CGST

  2. SGST

  3. IGST

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

After setting off against Output SGST, any remaining Input SGST credit can be utilized to set off Output IGST liability.

Multiple choice

What is the correct order of events in a negative feedback loop?

  1. sensor, integrator, response

  2. stimulus, effector, integrator, sensor, response

  3. stimulus, sensor, integrator, effector, response

  4. sensor, response
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A negative feedback loop begins with a stimulus (a change in the environment), which is detected by a sensor. The sensor sends this information to an integrator (control center), which directs an effector to produce a response that counteracts the initial stimulus.

Multiple choice

game controllers

  1. input

  2. output
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Game controllers send button presses, trigger pulls, and joystick movements from the user to the console or computer. Since they transmit user actions into the system, they are input devices.

Multiple choice

sensors

  1. input

  2. output
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sensors detect physical properties from the environment (like temperature, light, or pressure) and convert them into electrical signals. These signals are then sent into the computer for processing, making sensors input devices.