Local Area Network

Local Area Network

Learning Goal:

You will identify and explain the purpose and components of a local area network

Telephone lines: basis of all networks

1876: Alexander Bell makes first telephone call.

“Mr Watson, come here — I want to see you”

One line: from one room to the next

Multiple Choice

Connect all phones with each other: how many connections do you need?

• 8

• 10

• 12

12 telephones need 66 wires to communicate with each single telephone

How reduce the number of cables?

Using a switch

It switches between telephones (nodes)

Multiple Choice

Using a switch to connect 5 phones how many cables do you need?

• 10

• 12

• 5

What is the simplest computer network?

• Two computers connected with a cable

How connect more than 2 computers? - A switch

• A switch is a box that connects computers and switches data from one computer to another.

Local Area Network (LAN)

• A switch is also used to connect computers, printers and other devices.

• This type of network is called a Local Area Network or LAN

Local Area Network (LAN) - Definition

• A local area network (LAN) is a collection of devices connected together in one physical location, such as a building, office, or home.

Creating a simple network using Micro Bits

• Two Micro Bits will be connected together as shown.

• The device on the left will set Pin 1 (transmit port) to high when Button B is pressed. The device on the right will detect this on Pin 0 (receive port). The GND pins are tied together to create an electrical circuit.

Follow the next steps the teacher is showing you on the White Board

Open in a new tab Code Maker: https://makecode.microbit.org/