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Welcome to the The Computer MCQs Page

Dive deep into the fascinating world of The Computer with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of The Computer, a crucial aspect of Human Computer Interaction. In this section, you will encounter a diverse range of MCQs that cover various aspects of The Computer, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Human Computer Interaction.

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Check out the MCQs below to embark on an enriching journey through The Computer. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Human Computer Interaction.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of The Computer. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

The Computer MCQs | Page 9 of 26

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Q81.
What is a disadvantage of CRT displays?

a.

They are unable to display color.

b.

They are slow and cannot handle animations.

c.

They are lightweight and easy to transport.

d.

They are fairly bulky due to the electron gun and focusing components behind the screen.

Discuss
Answer: (d).They are fairly bulky due to the electron gun and focusing components behind the screen. Explanation:One disadvantage of CRT displays is their bulkiness. This is primarily due to the electron gun and focusing components that are located behind the screen. These components make the CRT display less compact compared to other types of displays such as LCD screens.
Q82.
What are some advantages of Liquid Crystal Display (LCD) technology?

a.

LCDs are bulkier and heavier than CRTs.

b.

LCDs consume a lot of power and have radiation problems.

c.

LCDs are lightweight, consume less power, and have no radiation problems.

d.

LCDs need to be refreshed at higher rates than CRTs.

Discuss
Answer: (c).LCDs are lightweight, consume less power, and have no radiation problems. Explanation:LCDs are known for being light, flat, and consuming less power than traditional CRTs. They have no radiation problems associated with them and are often referred to as flat-panel displays. These attributes make them particularly suitable for portable devices like notebooks and personal organizers.
Q83.
How does an LCD create an image?

a.

By emitting a stream of electrons.

b.

By utilizing a thin layer of liquid crystal that can twist to alter the plane of polarization of incoming light.

c.

By using plasma cells filled with noble gases.

d.

By using light-emitting diodes.

Discuss
Answer: (b).By utilizing a thin layer of liquid crystal that can twist to alter the plane of polarization of incoming light. Explanation:An LCD creates an image by sandwiching a thin layer of liquid crystal between two glass plates. When voltage is applied, the crystal twists, altering the plane of polarization of incoming light. This process turns the activated cell black or leaves it white, creating an image.
Q84.
Why might using an LCD result in reduced eye strain compared to a CRT?

a.

Because LCDs emit a high intensity of light.

b.

Because LCDs require higher refresh rates, resulting in noticeable flicker.

c.

Because LCDs emit a lower intensity of light and have reduced flicker.

d.

Because LCDs use a different color scheme that is easier on the eyes.

Discuss
Answer: (c).Because LCDs emit a lower intensity of light and have reduced flicker. Explanation:LCD screens emit a lower intensity of light and have a slower response, meaning that flicker is not usually noticeable. These factors combine to make LCDs less tiring to use than standard CRT monitors, resulting in reduced eyestrain.
Q85.
How has the advent of LCD screens impacted the computer market?

a.

It has decreased the demand for portable computing devices.

b.

It has led to an increase in the size and weight of computers.

c.

It has enabled the creation of smaller, lighter computers and broadened the computer market.

d.

It has limited the development of new display technologies.

Discuss
Answer: (c).It has enabled the creation of smaller, lighter computers and broadened the computer market. Explanation:The introduction of LCD screens, with their compactness, light weight, and low power consumption, allowed for the creation of smaller, lighter computers. This development has not only broadened the computer market but also opened up new ways of working, with increased access to computers away from the office.
Q86.
What developments have improved the performance and usability of LCD screens?

a.

The use of supertwisted crystals and improved response times.

b.

The inclusion of radiation emitting components.

c.

The increase in power consumption.

d.

The introduction of grayscale displays.

Discuss
Answer: (a).The use of supertwisted crystals and improved response times. Explanation:The performance and usability of LCD screens have been enhanced by the development of supertwisted crystals, which increase the viewing angle dramatically, and improved response times. These advancements have led to LCD screens being used in a wide range of devices, including personal DVD players and home televisions.
Q87.
What is a significant difference between random scan and raster scan displays?

a.

Random scan displays scan the entire screen sequentially and horizontally.

b.

Random scan displays can draw lines directly without creating jaggies.

c.

Random scan displays have lower resolution than raster scan displays.

d.

Random scan displays use flood guns to maintain a stable image.

Discuss
Answer: (b).Random scan displays can draw lines directly without creating jaggies. Explanation:Random scan displays, also known as vector displays, draw lines directly on the screen rather than scanning the whole screen sequentially and horizontally like raster scan (or bitmap) displays. By updating the screen at least 30 Hz, these displays can reduce flicker and avoid creating jagged lines, or "jaggies", which allows them to achieve higher resolutions. However, they are more expensive and less widely used than raster scan displays.
Q88.
What is one advantage of the direct view storage tube used in analog storage oscilloscopes?

a.

It can selectively erase parts of the screen.

b.

It has high contrast and high brightness.

c.

It produces a stable display with no flicker.

d.

It has superior color display capabilities.

Discuss
Answer: (c).It produces a stable display with no flicker. Explanation:Direct view storage tubes, like those used in analog storage oscilloscopes, have an advantage in that they produce a stable display with no flicker. This is achieved by using flood guns to maintain the image. However, these displays have some drawbacks, including low contrast, low brightness, and difficulty displaying color. In addition, while the screen image can be incrementally updated, it cannot be selectively erased - any items that need to be removed must be done by redrawing the entire image on a completely erased screen.
Q89.
Why are random scan displays used only in niche applications?

a.

Because they are less expensive than raster scan displays.

b.

Because they cause no eyestrain or fatigue.

c.

Because they offer superior color display.

d.

Because they are more expensive and cause eyestrain and fatigue.

Discuss
Answer: (d).Because they are more expensive and cause eyestrain and fatigue. Explanation:Random scan displays are typically more expensive than raster scan displays, and they can cause eyestrain and fatigue. Although they can draw lines directly and achieve higher resolutions, the color display using beam penetration technology is generally of poorer quality. Due to these factors, they are used only in niche applications.
Q90.
What are the characteristics of a direct view storage tube display?

a.

High resolution, high contrast, high brightness, and superior color display.

b.

High resolution, low contrast, low brightness, and difficulty in displaying color.

c.

Low resolution, high contrast, high brightness, and superior color display.

d.

Low resolution, low contrast, low brightness, and difficulty in displaying color.

Discuss
Answer: (b).High resolution, low contrast, low brightness, and difficulty in displaying color. Explanation:Direct view storage tubes are known for having a high resolution, typically around 4096 × 3120 pixels. However, they also have low contrast and low brightness, and they struggle to display color effectively. They are commonly used as the display for an analog storage oscilloscope.
Page 9 of 26

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