Computer Knowledge

Computer Hardware Devices

1,004 Questions

Computer Hardware Devices focuses on the physical components of a computer system, including input, output, and memory devices. It tests practical understanding of ports, displays, and peripheral technologies. This topic is common in the computer knowledge section of banking and SSC exams.

Input output devicesMonitor settingsComputer portsAssistive technologyHardware components

Computer Hardware Devices Questions

Multiple choice

What is the name of the photosensitive input device, which interacts with computer through a cathode-ray tube display?

  1. Plotter

  2. Light pen

  3. Touch user interface

  4. Optical mouse

  5. Hollerith card
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Light pens are used to manipulate information on a computer. It is a small, photosensitive device connected to a computer and moved by hand over an output display. It interacts with a computer through a cathode-ray tube display.

Multiple choice

Which of the following output devices contains an electron gun?

  1. CRT

  2. LCD

  3. Laser printer

  4. Plasma display

  5. Electroluminescent displays
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The Cathode Ray Tube (CRT) is a vacuum tube containing an electron gun (a source of electrons) and a fluorescent screen, with internal or external means to accelerate and deflect the electron beam, used to create images in the form of light emitted from the fluorescent screen.

Multiple choice

audio response is-

  1. output

  2. produces verbal response from computer

  3. both a and b

  4. only b

  5. none of the above
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

audio response means a device that enables a computer to give a spoken response by generating sound similar to human speech so both a and b are correct option

Multiple choice

A device, which has similar operation as that of a joystick is

  1. track ball

  2. light pen

  3. mouse

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

A trackball is essentially an upside-down mouse - you rotate a ball with your thumb or fingers to control cursor movement, just as a joystick is manipulated by hand to control movement on screen. Both trackballs and joysticks are pointing devices that involve direct manual manipulation to control position, whereas a mouse is moved across a surface and a light pen is dragged across the screen. Trackballs and joysticks share the same fundamental operational principle.

Multiple choice

How is power supplied to a low-power USB device?

  1. Through a power cable

  2. From an external power supply

  3. Directly from the computer’s power supply

  4. Through the USB cable

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Option (4) is the correct answer.

Multiple choice

Which of the following is not a part of a CRT?

  1. Phosphor Screen

  2. Shadow Mask

  3. Gas Plasma

  4. Electron Gun
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A CRT (Cathode Ray Tube) monitor consists of several key components: the phosphor screen that glows when struck by electrons, the shadow mask that ensures electrons hit the correct phosphor dots, and the electron gun that emits the electron beam. Gas plasma is an entirely different display technology used in flat-panel displays, not in CRT monitors. This is a knowledge-based question about CRT monitor architecture.