Computer Science MCQs

A device that reads printed or handwritten text and converts it into digital data.

A pointing device that uses a small ball that rolls on a surface to control the cursor on a computer screen.

A type of computer memory that retains data even when the power is turned off.

A type of memory that loses data when the power is turned off.

A type of computing where many calculations are performed simultaneously, speeding up processing.

A type of memory that is used to store instructions and data that the computer needs to operate.

A type of memory that is used to store permanent instructions and data that cannot be changed by the user.

A type of printer that uses ink or toner to create an image on paper.

The fifth generation of computers began in the year 1980 and continues into the present. It is marked by advancements in Artificial Intelligence (AI) and parallel processing.

The first generation of computers used vacuum tubes for processing. This period is considered to have been from 1942 to 1955.

Voice Recognition software was developed primarily during the Fourth Generation of computers. This period saw significant advancements in user interface technologies and the integration of voice commands into computing.

Natural Language Processing (NLP) is a key component of Artificial Intelligence. NLP enables computers to 'understand' and process human language.

The Honeywell 6000 series can be categorized as a Third Generation computer, utilizing integrated circuits (ICs) for processing and benefiting from increased speed, efficiency, and smaller size.

The mechanical mouse, introduced in 1968, employed a rolling ball to detect movement and control the cursor on the computer screen.

A Dot Matrix printer uses a fixed number of pins or wires to create the dots that form letters and characters on the printed paper.

High-level programming languages were introduced primarily in the Third generation of computers. These languages were designed to make programming easier by using English-like instructions.

The central processing unit (CPU), also known as the microprocessor, is the brain of a computer. It performs all the calculations and instructions for the computer.

Input devices allow users to enter data and instructions into a computer. Examples include keyboards, mice, scanners, and microphones.

Output devices display or present processed data and information from the computer. Examples include monitors, printers, speakers, and projectors.

ROM, or Read-Only Memory, holds essential startup instructions and programs that the computer needs to boot up.

RAM, or Random Access Memory, is a temporary storage location for data and programs that the CPU is actively using.

BIOS stands for Basic Input Output System. It's a set of instructions that the computer uses to start up and communicate with hardware components.

A scanner is a device that converts a physical image, like text or a photograph, into a digital format that a computer can process.

The fourth generation of computers used Very Large Scale Integration (VLSI) technology, which allowed for the creation of microprocessors and very complex integrated circuits.

The fourth generation of computers is characterized by the use of very large-scale integration (VLSI) technology, which allowed for the creation of microprocessors. They are known for their smaller size, increased processing speed, and the introduction of personal computers (PCs).

Laser printers can have a resolution of up to 1200 DPI (Dots Per Inch). This refers to the number of dots a printer can place per inch of paper, determining the sharpness and detail of printed images.

A digital camera captures images or videos directly in digital format, unlike traditional cameras that use film.

A mechanical computer designed by Charles Babbage in the 19th century. It was intended to perform complex calculations using punched cards for input and output. However, it was never fully completed during his lifetime.

Pixels are the small, individual points of light arranged in a grid on a monitor screen. They combine to form images and text displayed on the screen.

Inkjet printers typically have a printing speed of 1 - 15 pages per minute (PPM). They are generally slower than laser printers, but more affordable for personal use.

The first electronic general-purpose computer, developed by J. Presper Eckert and John Mauchly during World War II. It was used for calculating artillery firing tables and was groundbreaking in its time.

A system that uses a camera to scan and interpret QR codes, which are barcodes with a square pattern.

Software refers to the set of programs or instructions that tell a computer what to do. It dictates how hardware operates and performs specific tasks, enabling users to interact with the system.

The first generation of computers relied on machine language due to their limited capabilities. Machine language consists of binary code, which is difficult for humans to read and write.

The booting process, starting a computer, involves two main phases: 1. POST (Power-On Self Test): The computer checks its hardware components for any errors. 2. Loading the Operating System: The system finds and loads the Operating System into memory.

The control unit is responsible for coordinating the flow of data between the CPU, memory, and input/output (I/O) devices. It acts as a central coordinator, ensuring smooth communication and execution of instructions.

Widely considered the "Father of the Computer" for his contributions to the development of the Analytical Engine, a mechanical general-purpose computer designed in the 19th century. His work laid the foundation for future computing advancements.

The memory unit provides temporary storage for data and programs that the computer is currently using.

A digital camera captures images and videos directly in digital format, eliminating the need for film.

Digital cameras utilize a CCD Electronic Chip, a light-sensitive sensor, to convert light into digital signals.

The first generation of computers was characterized by the use of vacuum tubes for processing and circuits.

A scanner is an input device used to convert physical documents or images into digital format.

The video graphics card acts as an interface between the computer and the display monitor, processing and displaying images on the screen.

A mouse is a pointing device used to interact with graphical user interfaces (GUIs) by selecting icons, menus, and command buttons on the screen.

Laptops, notebooks, and tablets are examples of portable computers that belong to the fourth generation of computers.