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

An IBM System/38 represents for computer class of

  1. small scale computer

  2. medium scale computer

  3. large scale computer

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

The IBM System/38, introduced in 1979, was a mid-range computer system designed for small to medium-sized businesses. It was positioned as a 'small scale computer' or 'minicomputer' - smaller than mainframes but more powerful than microcomputers. It evolved into the AS/400 and later IBM i series. The classification 'small scale computer' is historically accurate for this system.

Multiple choice

Which video terminal(s) is/are generally used in engineering work stations?

  1. Character map terminal

  2. Bit map terminal

  3. RS-232 C terminal

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

Bit-map terminals provide pixel-level graphics control essential for engineering workstations running CAD, simulation, and visualization software. Character-map terminals only display text. RS-232C is a serial communication standard, not a display type.

Multiple choice

The collection of wires that connects several devices is called

  1. link

  2. bus

  3. bi-directional wires

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

A bus is a shared communication pathway that connects multiple components (CPU, memory, I/O devices) allowing data transfer. A link connects only two devices, while cables are physical connections.

Multiple choice

What is the ASCII value of ESC character?

 #include<stdio.h>

#include<conio.h>

using namespace std;

class first

{

      int b;

      public:

             first()

             {

                    b=10;

                    }

                    void display()

                    {

                         cout<<\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n b=<

                         }

                         };

                         class second

                         {

                               int d;

                               public:

                                      second()

                                      { d=20;

                                      }

                                      void display()

                                      {

                                            cout<<\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\n d=<

                                            }

                                            };

                                            int main()

                                            {

                                                first f,*p;

                                                second s,*i;

                                                p=&f;

                                                p->display();

                                                i=&s;

                                                p->display();

                                                getch();

                                                }

  1. 27

  2. 28

  3. 29

  4. 30

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

This value is correct answer for the question. The ASCII value of ESC character is 27. This is a standard value known as AMERICAN STANDARD CODE FOR INFORMATION INTERCHANGE. This can be seen in any C language book. <strong> <!-- @page { margin: 0.79in } P { margin-bottom: 0.08in } --> </strong>

Multiple choice

The oldest device for calculation is

  1. calculator

  2. modem

  3. computer

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

The abacus is the oldest known calculating device, dating back to around 2400-2300 BCE in Mesopotamia. It consists of beads that slide on rods to perform arithmetic operations. The abacus was widely used in ancient China, Rome, and other civilizations before modern calculators.

Multiple choice

Which of the following options is not an output device?

  1. Plotter

  2. Printer

  3. MICR

  4. Smart and Intelligent Terminal
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

MICR (Magnetic Ink Character Recognition) is an input device used primarily in banking to read check numbers. Plotters and printers are output devices that produce visual representations.

Multiple choice

Find the odd one out.

  1. Printer

  2. Microphone

  3. Scanner

  4. Keyboard

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

Printer is an  output device.

Multiple choice

The sound cards are available in which of the following configurations?

  1. 128 Bit

  2. 64Bit

  3. 32 Bit

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

Sound cards are manufactured in various bit configurations including 32-bit, 64-bit, and 128-bit versions to handle different audio quality and processing requirements. Option D correctly acknowledges that all these configurations exist in the market for different performance and quality needs.