SSS ONE WEEK NINE LESSON NOTE(ICT_223)

 

SS 1

TOPIC: APPLICATION OF ICT II

Introduction

The main function of any telecommunication network is to provide efficient transmission of information from point of origin to a point of termination.

Telecommunication Network

A telecommunication network is a collection of nodes and links that is capable of carrying audio, visual and data communications. It is a combination of nodes and links which are arranged in such a way that the message may pass from one part of the network to the other by travelling over variable nodes.

Smart messaging

Smart messaging was developed by Nokia and found only on Nokia phones. It allows people to do simple picture messaging with low cost, quick message transmission and high simplicity of regular text messages.

1.     SMS (short messaging service): is the most common type of text message and it is supported by a large number of mobile phones. It allows a maximum of 160 characters per message.

2.     EMS (Extended Message Service): Allows for pictures, animations, ringtones and other non-text content similar to smart messaging but EMS adds the ability to format text messaging including font size.

3.    MMS (Multimedia Messaging Service): includes the ability to create message with text, picture, music and other context.

ICT Based Gadgets

1.     Mobiles phone: an electric telecommunication device often referred to as a cellular phone or cellphone, connect to a wireless communications network through radio wave or satellite transmissions.

2.     Fax machine (Short for Facsimile and sometimes called tele-copying) is the telephone transmission of scanned-in, printed material (text or images). It works by scanning documents, scanning documents, sending the data through land-line and then printing out the copies out at another fax location.

3.     ATM (Automated Teller Machines): this is a computerized machine that permits banks customers to gain access to their accounts with a magnetically encoded plastic card and code number.

4.     Dispensing machine: is a machine that dispenses items such as snacks, beverages, lottery tickets etc. to customers automatically after the customer inserts currency credit/debit card into the machine.

5.     POS (Point of Sale): is used to conduct retail transactions.

   Radio set: radio is the wireless transmission of signals through free space by electromagnetic radiation of a frequency below that of visible light which ranges from about 30 Khz to 300 Ghz

7.     Television set: is a widely used telecommunications system for broadcasting and receiving moving pictures and sound over a distance.


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