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 following are all computing devices, except

  1. notebook computers

  2. cell phones

  3. digital scanners

  4. personal digital assistants

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

A digital scanner is an input peripheral device that captures images and documents, not a standalone computing device. Notebooks, cell phones, and PDAs are all computing devices with processors, memory, and the ability to execute programs independently.

Multiple choice

The blinking symbol on the computer screen is called the

  1. mouse

  2. logo

  3. hand

  4. palm

  5. cursor
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The cursor is the blinking indicator (usually a vertical line or underscore) that shows where text will be inserted on the screen. The mouse is a pointing device, logo refers to a brand symbol, hand and palm are cursor shapes but not the blinking insertion point itself. The cursor's blinking indicates the active text input position.

Multiple choice

The machine that is used mainly for transmitting sketches is known as

  1. telefax

  2. telex

  3. tele-autograph

  4. teletex

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

Telefax is used for transmitting sketches. The chart or diagram is first sketched on paper. This is wrapped around a cylinder in machine and sent. The sender makes contact with the receiver by telephone. 

Multiple choice

Which is Universal Product Code (UPC)?

  1. Scanner

  2. Barcode system

  3. Graphics adapter

  4. Hardware equipment

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

Yes, bar code system is called as Universal Product Code and it is an electronic device for reading printed bar codes.

Multiple choice

VDU is also called as_________.

  1. screen

  2. monitor

  3. both 1 and 2

  4. plotter

  5. printer
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, both options are true because screen and monitor both are the display units.

Multiple choice

To access data/address bus, tristate buffers are used ________________

  1. to isolate the devices

  2. to share devices simultaneously

  3. to provide pipelining to the bus

  4. none of these

  5. all of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Tristate buffers have three outputs; i) 1  ii) 0  iii) open circuit (high resistance). When device is not in use, it goes in tristate condition, i.e. open circuit. This condition isolates the device from the bus. 

Multiple choice

Why I/O terminals in a system are normally latched while address terminals are not?

  1. I/O needs to hold the output status even after the clock address does not.

  2. Address needs to hold status after the clock I/O does not.

  3. I/O terminals are not latched.

  4. Address terminals are latched.

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

Devices connected to I/O terminals are normally slower in access compared to the processor. So, data on the terminals may be available before the device accesses them. This data must remain on the terminal till device accesses it. This is possible only when the data is latched on the terminal. So, I/O are latched.

Multiple choice

Expand the term MICR.

  1. Magnetic Ink Character Reader

  2. Magnetic Ink Code Reader

  3. Magnetic Ink Chapter Reader

  4. Magnetic Ink Case Reader

  5. Metallic Ink Code Recognition
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Correct option Mostly used by banks for authentication of cheques