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

The output device LCD stands for

  1. Liquid Crystal Display

  2. Light Crystal Display

  3. Liquid Compact Display

  4. Light Compact Disk

  5. Light Compact Display
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

LCD stands for Liquid Crystal Display.

Multiple choice

Unix is an example for

  1. input device

  2. output device

  3. operating system

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

Unix is a computer operating system that was developed in the 1960s and 1970s. It is not an input device, output device, or terminal - those are hardware components or interfaces, while Unix is system software.

Multiple choice

Keyboard is an input device used to give instructions to the computer. Normally how many keys are there in a keyboard?

  1. 90

  2. 101

  3. 112

  4. 87
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Standard IBM-compatible PC keyboards historically had 101 keys, including function keys, number pad, and standard QWERTY layout. This became the baseline for desktop keyboards before enhanced 104-key layouts (with Windows keys) became common. Laptop keyboards typically have fewer keys (87-90) due to space constraints.

Multiple choice

A……………….converts text or images on paper into an electronic format that the computer can display, print and store.

  1. disk formatter

  2. modem

  3. scanner

  4. graphic storage device
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

A scanner is a device that optically scans images, printed text, handwriting, or an object and converts it to a digital image. Unlike a modem (for internet connectivity) or disk formatter (for disk preparation), a scanner's specific purpose is digitizing physical documents and images for computer use.

Multiple choice

Which of the following is not an input device?

  1. Digitized camera

  2. Spaceball

  3. joystick

  4. LCD
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

LCD (Liquid Crystal Display) is an output device that displays visual information. A digitized camera, spaceball (input device), and joystick are all input devices that send data to the computer.