Computer Knowledge

Computer Hardware Devices

893 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

Common output devices in robotics

  1. CLamps, claws, motors, and sirens

  2. Cameras

  3. Lasers and radar

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

Output devices in robotics are components that produce physical effects. Clamps, claws, and motors are actuators that create motion or force, while sirens produce sound output. Cameras, sensors, lasers, and radar are input devices that gather information from the environment.

Multiple choice

Common input devices in robotics

  1. Speakers and sirens

  2. Clamps and claws

  3. Robotic arms and fingers

  4. Lasers, cameras and sensors
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Input devices in robotics allow the robot to perceive its environment. Cameras, sensors, and lasers are common examples used for data acquisition.

Multiple choice evs computer computer - an introduction computer and its functions different parts used in computers

Which of the following device is used to check the presence or absence of pen or pencil mark on a paper?

  1. MICR

  2. OCR

  3. OMR

  4. Scanner
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Optical Mark Reading (OMR) is a method of entering data into a computer system. Optical Mark Readers reads pencil or pen marks made in pre-defined positions on paper forms as responses to questions or tick list prompts
Multiple choice introduction to excel information communication technology (ict) physics

Communication between computer and a keyboard involves.

  1. Simplex transmission

  2. Full duplex transmission

  3. Half duplex transmission

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

Communication between computer and a keyboard involves Simplex transmission.

Simplex communication is a communication channel that sends information in one direction only. The International Telecommunication Union definition is a communications channel that operates in one direction at a time, but that may be reversible; this is termed half duplex in other contexts.

An advantage of half-duplex is that the single track is cheaper than the double tracks. A full duplex communication channel is able to transmit data in both directions on a signal carrier at the same time. It is constructed as a pair of simplex links that allows bidirectional simultaneous transmission.

Multiple choice wireless connections parts of computer physics

A special type of device which uses an ordinary telephone with a computer is?

  1. Light pen

  2. Mouse

  3. Acoustic couple

  4. Touch panel

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

A special type of device which uses an ordinary telephone with a computer is Acoustic couple

In telecommunications, an acoustic coupler is an interface device for coupling electrical signals by acoustical means—usually into and out of a telephone.

Ethernet modems that plug into the network card in the computer, and wireless modems that connect to a computer using a wireless LAN (WLAN). Some modems offer dual Ethernet and USB connection. There are also routers with integrated ADSL modem.

A TTY is a special device that lets people who are deaf, hard of hearing, or speech-impaired use the telephone to communicate, by allowing them to type messages back and forth to one another instead of talking and listening.

Multiple choice organization of commerce and management recent trends of business e-commerce and mobile commerce introduction to internet and e-commerce emerging modes of services

In which of the following, personal digital assistants (PDAs) are used for buying and selling of goods and services?

  1. E-commerce

  2. M-commerce

  3. V-commerce

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

M-commerce means mobile commerce i.e. commercial activities that takes place electronically by PDAs i.e. mobile phones. M-commerce enables users to access internet without finding a place to plug in. These transactions include purchasing stocks, remitting money etc. this service is often referred as mobile banking.

Multiple choice classification of computer introduction to the information age physics

Which most popular input device used today for interactive processing & for the on line entry of data for batch processing.

  1. Mouse

  2. Magnetic disk

  3. Visual display terminal

  4. Card punch

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

Visual display terminal most popular input device used today for interactive processing & for the on line entry of data for batch processing.

A video display unit (VDU) consists of: A computer output device that uses a cathode ray tube or other technology to present visual images. One or more input devices, such as a keyboard , a mouse , or both. A synonym sometimes used in the United States is video display terminal ( VDT ).

A video display unit (VDU) consists of: A computer output device that uses a cathode ray tube or other technology to present visual images. One or more input devices, such as a keyboard , a mouse , or both.

Multiple choice

Where is your USB port located, when using computers in lab #137?

  1. Right Side of Monitor

  2. Right Side of Keyboard

  3. Left Side of Monitor

  4. Left Side of Keyboard
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

This is a location-specific question about a specific lab environment. Without access to the physical lab, this is based on the provided answer key.