Lesson Notes By Weeks and Term v4 - SHS 1
DATA COMMUNICATION AND NETWORK SYSTEMS
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DATA COMMUNICATION AND NETWORK SYSTEMS
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Subject: Computing
Class: SHS 1
Term: 2nd Term
Week: 5
Grade code: 1.1.3.LI.3
Strand code: 1
Sub-strand code: 3
Content standard code: 1.1.3.CS.1
Indicator code: 1.1.3.LI.3
Theme: COMPUTER ARCHITECTURE AND ORGANISATION
Subtheme: DATA COMMUNICATION AND NETWORK SYSTEMS
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In today's world, we are constantly connected. We share pictures on WhatsApp, check exam results online, and send money using mobile money. All these activities are possible because of computer networks. Understanding the different types of networks is like understanding the difference between a small village path, a major road connecting towns in a region, and the national highway system that connects the entire country. Each has a different purpose, size, and speed. This lesson will help us understand the building blocks of our connected world, from the Wi-Fi in our homes and schools to the massive network that powers Ghana's telecommunication systems.
What is a Computer Network?
Before we discuss the types, let's understand what a network is. A computer network is a collection of two or more connected computers and other devices (like printers, scanners, smartphones) that can communicate and share resources. Resources can be: Hardware: Sharing a single printer among all computers in an office. Software: A single application running on a server that many users can access. Data/Information: Sharing files, sending emails, or accessing a website.
Analogy: Think of your class. You and your classmates are like computers. When you talk to each other to share notes or ideas, you form a communication network.
The primary way we classify these networks is by the geographical area they cover. This leads us to the three main types.