computer system chapter-1 for Computer Science class-xi

Описание: A computer system is an electronic device that takes data as input, processes it according to a set of instructions, and produces meaningful output. It performs a wide range of tasks like calculations, data storage, communication, and automation.

The chapter explains the basic components of a computer system which are:

Input Unit: Devices like keyboard, mouse, and scanner used to enter data into the computer.

Processing Unit (CPU): The brain of the computer that processes data. It has two main parts —

Arithmetic Logic Unit (ALU): Performs calculations and logical operations.

Control Unit (CU): Controls and coordinates all operations inside the computer.

Memory/Storage Unit: Used to store data and instructions temporarily (RAM) or permanently (Hard Disk, SSD).

Output Unit: Devices like monitor, printer, and speakers that display or present the processed data.

The chapter also introduces types of software (system software, application software, and utility programs) and the difference between hardware and software. It explains how these components work together to form a complete and efficient computer system.