Exercise 2

2. Now, read again the text and answer the following questions.


a. What are the main steps in the transmission of information?

1. The generation of a thought pattern or image in the mind of an originator.

2. The description of that image, with a certain measure of precision, by a set of aural or
visual symbols.

3. The encoding of these symbols in a form that is suitable for transmission over a physical
medium of interest

4. The transmission of the encoded symbols to the desired destination.

5. The decoding and reproduction of the original symbols.

6. The recreation of the original thought pattern or image, with a definable degradation in
quality, in the mind of a recipient; the degradation is caused by imperfections in the
system.


b. In what type of communication is the human mind not directly involved in real time? How are
human decisions limited in this situation?

In computer communications involving communication between two or more computers.

Human decisions may enter only in setting up the programs or commands for the computer.


c. What are the three basic elements of a communication system?

- Transmitter
- Communication channel
- Receiver


d. What is the purpose of the transmitter?

To transform the message signal produced by the source of information into a form suitable
for transmission over the channel.


e. What is the channel?

The physical medium that connects them together.


f. What is the purpose of the reciever?

To operate on the received signal so as to reconstruct a recognizable form of the original
message signal and to deliver it to the user destination.