9TH Class Computer Notes

का वर्णन 9TH Class Computer Notes

Key Notes of Computer for Class 9. These notes will provide you overview of the chapters and important points to remember. Help in quick revision before test.
### HOW APP WORKS ###
Each question has four options. You have to select one of them. If you do not know answer of question, you can also check the answer by simple tap on a button to show answer. At the end of test, you are presented with a screen which contains result of the test. It tells how many questions you answered correctly and how many questions you answered incorrectly.
### TOPIC COVERED ###
# Introduction to Computers
What is Computer
History of Computer
Computer Generations
Types of Computer
Classification of Computer
# Computer Components
Components of Computer System
Organization of Computer
System Bus
Computer Storage
Input / Output Devices
# Input/Output Devices
Input Devices
Output Devices
# Storage Devices
Main Memory
How does Memory Work
Memory Measuring Units
Data Organization within a byte or Word
Secondary Memory
# Number System
Data and Information
Number System
Number System Conversion
Representation of Number Using 1s and 2
Binary Arithmatic
# Boolean Algebra
Introduction
Boolean Algebra
Laws and theorms of Boolean Algebra
Karnaugh Map (K-Map)
# Computer Software
Introduction
System Software
Functions of an Operating System
Langauge Translator
Disk Operating System
# Introduction to Windows
Main Keywords Associated with Microsoft
Features of Windows
Windows Desktop
Using the Windows Explorer Program
Using Windows Controls