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b. Internet:Internet is a global computer network providing a variety of information
and communication facilities, consisting of interconnected networks using
standardized communication protocols. It is a global network of information
transmitted to billions of computers and devices. These networks are operated
from various entities, such as education, government and businesses that
follow specific protocols. It is taken as the latest, fastest, convenient, reliable and
cheapest means of electronic communication. The website acts as a connection
between the computer and satellite by which the information and the messages
are received and sent throughout the world. So, Internet is a global wide area
network that connects computer systems across the world.
c. Fax: Fax is one of the popular mediums of communication which allows the
transmission of documents containing both text and graphics over ordinary
telephone lines. It is the device that sends and receives printed pages or images
over telephone lines by digitizing the material with an internal optical scanner
and transmitting the information as electronic signals. It is mechanical process
in which written information is sent and received. For this system two devices
for transmitting and receiving messages are needed. Such two devices are
linked through telephone connection and written message is transmitted. It is
very fast and popular technology, widely used in offices for quick exchange of
written information.

EXERCISE

Give very short answers to the following questions
1. When was systematic postal service started in Nepal?

2. What is a post card?
3. What is a fax?
4. When did Nepal become a member of UPU?

5. Write two differences between ordinary and registered letter.
Give short answers to the following questions:

1. What is postal service? Explain its importance.
2. Write the differences between ordinary and registered letter.
3. Explain the methods of sending letter by post.

4. What is electronic communication service? Mention any three electronic devices
used to transfer the written messages.

5. Explain in short the historical development of postal service in Nepal.

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