A Short Computer Test For 4th Grade

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Questions: 10 | Attempts: 1,601 | Updated: Oct 24, 2024

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A Short Computer Test For 4th Grade - Quiz

A computer is an electronic device that accepts data as input, processes data into information, stores information for subsequent uses, and output the information whenever it is needed. The usage of computer makes our work easier, faster and more efficient.
How good are you in computer studies? Try these questions

Questions and Answers

1.

Which of the following was among the first computer used?
- A.
  
  Laptop
- B.
  
  Tablet
- C.
  
  Abacus
- D.
  
  Mobile phone
Correct Answer
C. Abacus

Explanation
The abacus was among the first computers used because it is an ancient calculating tool that predates modern electronic computers. It consists of a series of rods or wires with beads that can be moved back and forth to perform calculations. The abacus was widely used in ancient civilizations such as Mesopotamia, Egypt, and China, and it played a crucial role in performing mathematical calculations before the invention of modern computers.

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2.

Which of these makes the usage of computer more efficient?
- A.
  
  Fire
- B.
  
  Petrol
- C.
  
  Electricity
- D.
  
  Chair
Correct Answer
C. Electricity

Explanation
Electricity makes the usage of computers more efficient because it is the primary source of power for computers. Computers require electricity to function and perform tasks. Without electricity, computers would not be able to operate or provide any functionality. Therefore, the availability of electricity is crucial for efficient computer usage.

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3.

When was vacuum tube replaced by integrated circuit and transistor?
- A.
  
  1975
- B.
  
  2002
- C.
  
  1999
- D.
  
  1960
Correct Answer
D. 1960

Explanation
In 1960, the vacuum tube was replaced by the integrated circuit and transistor. This marked a significant advancement in technology as the integrated circuit and transistor were smaller, more efficient, and more reliable than vacuum tubes. This transition led to the development of smaller and more powerful electronic devices, paving the way for the modern era of technology.

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4.

Which of the following is the physical part of the computer system?
- A.
  
  Software
- B.
  
  Memory
- C.
  
  Hardware
- D.
  
  RAM
Correct Answer
C. Hardware

Explanation
Hardware refers to the physical components of a computer system that can be touched and seen. This includes devices such as the central processing unit (CPU), monitor, keyboard, mouse, and printer. Software, on the other hand, refers to the programs and applications that run on the hardware. Memory and RAM are both types of hardware components that store data and instructions for the computer to access and use. Therefore, out of the given options, hardware is the correct answer as it specifically represents the physical part of the computer system.

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5.

Which is the permanent memory of the computer?
- A.
  
  RAM
- B.
  
  ROM
- C.
  
  Hardware
- D.
  
  Software
Correct Answer
B. ROM

Explanation
ROM stands for Read-Only Memory and it is a type of permanent memory in a computer. Unlike RAM (Random Access Memory) which is volatile and loses its data when the computer is turned off, ROM retains its data even when the power is turned off. It contains firmware or software instructions that are permanently stored and cannot be modified or erased by normal computer operations. ROM is used to store the computer's BIOS (Basic Input/Output System) and other important system instructions that are necessary for the computer to boot up and operate properly.

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6.

Which of the following is a type of memory for a computer?
- A.
  
  Hard drive
- B.
  
  Mouse
- C.
  
  Keyboard
- D.
  
  Microchip
Correct Answer
A. Hard drive

Explanation
A hard drive is a type of memory for a computer. It is a non-volatile storage device that stores and retrieves digital information using magnetic storage and rotating platters. It is commonly used for long-term storage of data, programs, and operating systems. Unlike volatile memory such as RAM, the data on a hard drive remains intact even when the computer is turned off. Therefore, a hard drive is an essential component of a computer's memory system.

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7.

Which among the following is the most commonly used computer part?
- A.
  
  Monitor
- B.
  
  Keyboard
- C.
  
  Table
- D.
  
  CPU
Correct Answer
B. Keyboard

Explanation
The keyboard is the most commonly used computer part as it is an essential input device that allows users to input data and commands into the computer. It is used for typing, navigating through menus, and executing various functions. Without a keyboard, it would be difficult to interact with a computer and perform tasks efficiently. Therefore, the keyboard is considered the most commonly used computer part.

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8.

What is used to move the cursor on the screen of a computer?
- A.
  
  Stick
- B.
  
  Pen
- C.
  
  Finger
- D.
  
  Mouse
Correct Answer
D. Mouse

Explanation
A mouse is used to move the cursor on the screen of a computer. It is a handheld pointing device that is connected to the computer via a wire or wirelessly. By moving the mouse on a flat surface, the cursor on the screen can be controlled to select, click, drag, and interact with various elements and applications on the computer. The mouse typically has one or more buttons that can be clicked to perform different actions, making it an essential tool for navigating and operating a computer.

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9.

Which device is used to bring information out of the computer?
- A.
  
  Mouse
- B.
  
  Printer
- C.
  
  Touchpad
- D.
  
  Keyboard
Correct Answer
B. Printer

Explanation
A printer is a device that is used to bring information out of the computer by producing a physical copy of the information on paper. It takes digital data from the computer and converts it into a printed document that can be read or used for various purposes. This makes it an essential device for transferring information from the digital realm to the physical world.

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10.

Which of these is not a type of a hardware device?
- A.
  
  Mouse
- B.
  
  Printer
- C.
  
  Keyboard
- D.
  
  Operating System
Correct Answer
D. Operating System

Explanation
The given question asks to identify the option that is not a type of hardware device. Out of the four options provided, "Operating System" is the correct answer. This is because an operating system is a software program that manages computer hardware and software resources, rather than being a physical hardware device like a mouse, printer, or keyboard.

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