Chapter 1: Introduction to Computers and IT (Set-6)
A computer is best defined as an electronic machine that mainly
A Processes data
B Plays games
C Shows pictures
D Prints papers
A computer is an electronic machine that accepts data as input, processes it according to instructions, stores it, and produces output as useful information. Data processing is its core function.
Which characteristic allows a computer to perform millions of operations per second
A Accuracy
B Storage
C Speed
D Diligence
Speed refers to how fast a computer can perform calculations and operations. Computers can process instructions in microseconds or nanoseconds, making them much faster than humans.
Which feature ensures correct output when correct input is given
A Automation
B Size
C Versatility
D Accuracy
Accuracy means the computer produces correct results if the input data and program instructions are correct. Computers do not make mistakes in calculation unless wrong data or logic is used.
Which characteristic allows a computer to store large amounts of data
A Storage
B Speed
C Automation
D Intelligence
Storage is the ability of a computer to save data and programs for future use. Modern computers can store huge amounts of information using hard disks and solid-state drives.
Which term describes a computer’s ability to perform different types of tasks
A Accuracy
B Versatility
C Diligence
D Heat
Versatility means a computer can be used for many tasks like typing, calculations, browsing, and designing. Changing software allows the same computer to perform different jobs.
Which feature allows a computer to work for long hours without getting tired
A Emotion
B Creativity
C Diligence
D Intelligence
Diligence means a computer can work continuously without fatigue. It performs repetitive tasks with the same efficiency and accuracy for long periods.
Which is a common limitation of computers
A Cannot think
B Get tired fast
C Need rest
D Feel emotions
Computers cannot think or make decisions on their own. They follow instructions given by humans and depend entirely on programs and input data.
Which area is a common application of computers
A Hand farming
B Stone cutting
C Manual sewing
D Banking
Computers are widely used in banking for account management, transactions, online banking, and record keeping due to speed and accuracy.
Raw facts entered into a computer are called
A Information
B Output
C Data
D Program
Data consists of raw facts like numbers, text, and symbols. By itself, data has little meaning until it is processed.
Processed data that is meaningful is called
A Information
B Hardware
C Program
D Device
Information is data that has been processed and organized so that it becomes meaningful and useful for decision-making.
Which cycle explains how a computer works step by step
A Power cycle
B IPO cycle
C Memory cycle
D Network cycle
The IPO cycle stands for Input–Process–Output. It explains how data is entered, processed, and then output is produced.
Which stage of IPO accepts data into the computer
A Process
B Output
C Input
D Storage
The input stage involves entering data into the computer using devices like keyboard, mouse, or scanner.
Which stage of IPO performs calculations and logic
A Process
B Input
C Output
D Display
Processing is done by the CPU, where calculations and logical decisions are performed on input data.
Which stage of IPO shows results to the user
A Input
B Process
C Memory
D Output
Output is the final result produced by the computer after processing, shown using devices like monitor or printer.
Which device is used to type letters and numbers
A Monitor
B Printer
C Keyboard
D Speaker
A keyboard is an input device used to enter text, numbers, and commands into a computer.
Which device is used to point and click on screen
A Mouse
B Monitor
C Scanner
D Speaker
A mouse is an input device that controls the pointer on the screen and helps select items easily.
Which device displays text and images
A Keyboard
B Monitor
C Scanner
D Microphone
A monitor is an output device that displays visual information such as text, images, and videos.
Which device produces sound output
A Mouse
B Scanner
C Speaker
D Keyboard
Speakers are output devices that convert digital audio signals into sound for users.
Which device converts paper documents into digital form
A Printer
B Monitor
C Speaker
D Scanner
A scanner reads printed text or images and converts them into digital data for storage and editing.
Which part of the computer is called the brain
A CPU
B Keyboard
C Mouse
D Monitor
The CPU controls all operations of the computer. It processes instructions, performs calculations, and manages data flow.
Which type of computer works with continuous values
A Digital computer
B Laptop computer
C Analog computer
D Tablet computer
Analog computers process continuous data such as temperature or voltage rather than discrete numbers.
Which type of computer uses binary digits
A Digital computer
B Analog computer
C Abacus
D Hybrid scale
Digital computers use binary numbers (0 and 1) to represent data and perform calculations.
Which computer combines analog and digital features
A Supercomputer
B Hybrid computer
C Mainframe
D Microcomputer
Hybrid computers combine analog speed with digital accuracy, useful in medical and scientific applications.
Which computer is meant for individual use
A Mainframe
B Supercomputer
C Minicomputer
D Microcomputer
Microcomputers are personal computers designed for one user, such as desktops and laptops.
Which computer supports hundreds of users at once
A Mainframe
B Laptop
C Tablet
D Smartphone
Mainframes are powerful computers used by large organizations to support many users and large databases.
Which computer is used for weather forecasting
A Desktop
B Laptop
C Supercomputer
D Tablet
Supercomputers perform very complex and fast calculations, making them suitable for weather prediction and scientific research.
Which portable computer folds and runs on battery
A Laptop
B Desktop
C Mainframe
D Server
A laptop is a portable computer with built-in battery, keyboard, and screen.
Which device mainly uses a touch screen
A Printer
B Scanner
C Plotter
D Tablet
Tablets are portable devices mainly operated through touch screens.
Which small computer is built inside machines like washing machines
A Supercomputer
B Mainframe
C Embedded system
D Desktop
Embedded systems are special-purpose computers built into devices to control specific functions.
Which ancient calculating device used beads
A Abacus
B ENIAC
C EDVAC
D UNIVAC
The abacus is an early manual calculating tool used for arithmetic operations.
Which machine was invented by Blaise Pascal
A Abacus
B Pascaline
C ENIAC
D UNIVAC
The Pascaline was a mechanical calculator designed by Blaise Pascal for arithmetic calculations.
Who is known as the father of computers
A Charles Babbage
B Alan Turing
C Bill Gates
D Steve Jobs
Charles Babbage proposed early designs of programmable computers, earning him the title father of computers.
Which engine was designed to calculate tables automatically
A Analytical Engine
B Abacus
C Difference Engine
D Slide rule
The Difference Engine was designed by Charles Babbage to compute mathematical tables automatically.
Which engine had concepts similar to modern computers
A Pascaline
B Abacus
C Calculator
D Analytical Engine
The Analytical Engine included ideas of memory and control, forming the basis of modern computer architecture.
Which first electronic computer used vacuum tubes
A ENIAC
B UNIVAC
C EDVAC
D Abacus
ENIAC was an early electronic computer that used vacuum tubes and occupied a large space.
Which computer introduced stored program concept
A ENIAC
B Abacus
C EDVAC
D Pascaline
EDVAC introduced the stored program concept where data and instructions are stored in memory.
Which was the first commercial computer
A UNIVAC
B ENIAC
C EDVAC
D Abacus
UNIVAC was one of the first commercial computers used for business purposes.
Which generation used vacuum tubes
A Second generation
B First generation
C Third generation
D Fourth generation
First-generation computers used vacuum tubes and consumed large amounts of power.
Which generation used transistors
A First generation
B Third generation
C Fourth generation
D Second generation
Second-generation computers replaced vacuum tubes with transistors, making systems smaller and more reliable.
Which generation used integrated circuits
A Third generation
B Second generation
C First generation
D Fifth generation
Third-generation computers used integrated circuits, increasing speed and reducing size.
Which generation is linked with microprocessors
A Third generation
B Second generation
C Fourth generation
D First generation
Fourth-generation computers used microprocessors, leading to personal computers.
Which term describes physical parts of computer
A Hardware
B Software
C Program
D Data
Hardware refers to the physical components of a computer like keyboard, CPU, and monitor.
Which term describes programs used by computer
A Hardware
B Device
C Wire
D Software
Software consists of instructions and programs that tell the computer what to do.
Which software controls basic hardware functions
A Application
B Firmware
C Game
D Utility
Firmware is stored in permanent memory and controls basic operations of hardware.
Which process starts the computer
A Booting
B Printing
C Scanning
D Formatting
Booting is the process of starting the computer and loading the operating system.
Which interface uses icons and menus
A CLI
B BIOS
C GUI
D POST
GUI allows users to interact with computers using graphical elements like icons and menus.
Which interface uses text commands
A CLI
B GUI
C Touch UI
D Voice UI
CLI requires users to type commands to perform tasks.
Which practice is safe in computer lab
A Wet hands use
B Pull cables
C Hit devices
D No food drinks
Keeping food and drinks away prevents damage to computers and ensures safety.
Which habit reduces eye strain
A Increase brightness
B Sit very close
C Take breaks
D Ignore posture
Taking short breaks helps relax eyes and reduces strain during long computer use.
Which practice supports ethical computer use
A Copy cracked apps
B Use licensed software
C Share passwords
D Hack accounts
Using licensed software is ethical and legal. It also protects systems from malware and supports developers.