Test: A Computer System - Class 3 MCQ

Navigation Keys, which include keys like Page Up, Page Down, and arrow keys, help users move the cursor within a document, facilitating easy editing and reviewing of text.

The mouse is a pointing device that allows users to navigate the computer interface by selecting items on the screen. It typically features left and right buttons for various functions, such as clicking and opening menus.

A Pen Drive is a portable storage device used to save and transfer data between computers. It is an example of a removable storage solution, distinct from other essential peripherals like a mouse or keyboard.

The IPO cycle illustrates how a computer operates: it takes input (data or instructions), processes that information, and then produces output (results). This fundamental concept helps users understand how computers work to transform commands into results.

A plotter is specialized hardware used for creating detailed line drawings and graphics using pens. It is commonly used in fields such as engineering and architecture for producing high-precision outputs.

LED monitors are recognized for being lightweight and taking up less space, while providing clearer images than both CRT and LCD monitors. This makes them a popular choice for modern computer displays.

A printer is a peripheral device that produces hard copies of documents stored on a computer. It converts digital files into physical form, making it essential for creating paperwork and visual materials.

A computer system consists of hardware, which includes the physical components you can touch, and software, which refers to the instructions that tell the computer how to operate. Understanding both components is crucial for comprehending how computers function.

Software encompasses the instructions and programs that guide a computer in performing tasks. It is essential for enabling hardware to function effectively and meet user needs.

The Control Unit (CU) orchestrates the operations of the CPU by managing data flow between its components and controlling how instructions are executed, ensuring that the computer operates correctly.

The Backspace Key is used to delete text located before the cursor, allowing users to easily correct mistakes while typing. Understanding keyboard functions enhances efficiency in data entry and document editing.

Function Keys, labeled F1 through F12, are designed to perform specific tasks based on the application in use, such as opening help menus or refreshing a page. They provide quick access to common functions.

The Space Bar Key is the longest key on the keyboard and is used to insert spaces between letters, numbers, and words. It is fundamental for maintaining clarity and readability in written text.

The CPU is often referred to as the brain of the computer, responsible for processing instructions and managing all operations. It contains components like the Memory Unit, Control Unit, and Arithmetic and Logical Unit, which work together to perform calculations and control data flow.

Application software is designed to help users perform specific tasks, such as word processing, creating spreadsheets, or making presentations. Examples include Microsoft Word and Excel, which assist users in various professional and personal tasks.

System software, such as operating systems like Windows 10, is essential for running the computer and managing hardware resources. It allows application software to function and provides a user interface for interaction.

LCD monitors are known for being compact and providing high-quality visual clarity. They are widely used due to their efficient use of space and superior image quality compared to older technologies like CRT monitors.

The Memory Unit (MU) temporarily stores data and instructions that the CPU needs while processing information. This allows for faster access and processing compared to retrieving data from slower storage devices like hard drives.

A microphone is designed to capture sound and record audio into a computer. It is essential for tasks such as voice recognition, audio recording, and communication applications.

The CPU is a tangible component of a computer and represents hardware. In contrast, software refers to programs and applications that run on hardware, such as Excel and other software tools.