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Worksheet: Computer System | Computer Applications for Class 9 PDF Download

Q.1. Fill in the blanks with the given words.

(i) The term _______ refers to a group of interconnected components which work together to perform an integrated whole.
(ii) Data are raw facts which when processed gives us  _______.
(iii) The  _______  Unit is responsible for recording the final results sent from internal storage unit.
(iv) The  _______  Unit directs the operation of all components and units of the computer system as per the instructions given in a program.
(v) The  _______ unit of the CPU is responsible for all arithmetic as well as logical operations.
(vi) The  _______  is an input device that captures information from a page and store them in graphic format.
(vii) The  _______ printer uses toner to print images.
(viii) The  _______  printer fires ink drops on paper for printing.
(ix) A  _______  is a video camera that feeds or streams its image in real time to or through a computer to a computer network.
(x) A  _______   is a sector or a group of sectors that the operating system can address in a hard disk.


Q.2. State whether the following statements are True (T) or False (F).

(i) Webcam can be used to record moving video with sound.
(ii) The term “Versatile” used to define a characteristic of a computer that is used to tell that a computer can do different type of task.
(iii) Processing of Information gives Data.
(iv) The Input Unit of the Computer is responsible for holding input data and intermediate results.
(v) ROM is volatile in nature.
(vi) The direction key on a keyboard is used to move the cursor on the screen.
(vii) A mouse can have only one button.
(viii) A Scanner is used to display data on the screen.
(ix) Dot Matrix Printer is an example of an non- Impact Printer.
(x) Among all the memories, the Registers are the fastest memory.

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FAQs on Worksheet: Computer System - Computer Applications for Class 9

1. What is a computer system?
Ans. A computer system refers to a combination of hardware and software components that work together to perform various tasks and operations. It consists of input devices, output devices, a central processing unit (CPU), memory, storage devices, and an operating system.
2. What are the main components of a computer system?
Ans. The main components of a computer system include: - Input devices: such as a keyboard, mouse, or touchscreen, which allow users to provide data or instructions to the computer. - Output devices: such as a monitor, printer, or speakers, which display or provide information to the user. - Central Processing Unit (CPU): which is the brain of the computer and performs calculations and executes instructions. - Memory: which stores data and instructions temporarily for quick access by the CPU. - Storage devices: such as hard drives or solid-state drives, which store data and programs for long-term use. - Operating system: which manages the computer's resources and provides an interface for users to interact with the computer.
3. What is the role of an operating system in a computer system?
Ans. The operating system plays a crucial role in a computer system. It manages hardware resources, provides a user interface, and enables the execution of software programs. Some key roles of an operating system include: - Managing and allocating memory and processing power to different applications and processes. - Providing a user-friendly interface for users to interact with the computer. - Handling input and output operations, allowing devices to communicate with the computer. - Managing files and directories, including creating, deleting, and organizing data. - Ensuring system security by controlling access to resources and protecting against unauthorized access or attacks.
4. What is the difference between hardware and software in a computer system?
Ans. Hardware and software are two essential components of a computer system, but they serve different purposes. Here are the differences between them: - Hardware refers to the physical components of a computer system, such as the CPU, monitor, keyboard, and memory. It can be touched and seen. In contrast, software refers to the intangible instructions or programs that tell the hardware what to do. - Hardware is responsible for executing software instructions and performing tasks, while software provides the logic and instructions for the hardware to follow. - Hardware components are tangible and can be physically replaced or upgraded, while software can be installed, updated, or uninstalled but cannot be physically touched. - Examples of hardware include a hard drive, motherboard, or graphics card, while examples of software include an operating system, word processing program, or web browser.
5. What are the different types of computer systems?
Ans. There are several types of computer systems, each designed for specific purposes. Some common types of computer systems include: - Personal Computers (PCs): These are commonly used by individuals for general computing tasks, such as web browsing, word processing, and multimedia. - Servers: These are powerful computers that provide services and resources to other computers on a network, such as file storage, email hosting, or website hosting. - Mainframes: These are large, high-performance computers used for critical applications that require massive data processing, such as banking systems or airline reservation systems. - Supercomputers: These are extremely powerful computers used for complex calculations and simulations, often found in research institutions or scientific laboratories. - Embedded Systems: These are computer systems embedded within other devices or products, such as smartphones, cars, or home appliances, to provide specific functionalities.
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