Lesson Notes By Weeks and Term - Senior Secondary School 1

CLASS: SSS 1

SUBJECT: DATA PROCESSING

TERM: 2^ND TERM

WEEK 5                                                                                                       DATE: ……………

TOPIC: MEDIUM OF INFORMATION TRANSMISSION

Types of Information Transmission, namely:

1. Satellite
2. Wireless
3. Cable

SATELLITE: In satellite communication, signal transferring between the sender and receiver is done with the help of satellite. In this process, the signal which is a beam of modulated microwaves is sent towards the satellite. Then the satellite amplifies the signal and sent it back to the receiver’s antenna present on the earth surface. All the signal transferring is happening in the space. Thus, this type of communication is known as SPACE COMMUNICATION.

EVALUATION

1. State the three types of information transmission.
2. What are the means of transferring information?

WIRELESS: Wireless communication involves the transmission of information over a distance without the help of wires, cables or any other forms of electrical conductors. The transmitted distance can be anywhere between a few meters ( e.g a television’s remote control) and thousands of kilometers (e.g radio communication).

Devices used for Wireless Communication

1. Cordless telephones
2. Mobiles
3. GPS Units
4. Wireless computer parts
5. Satellite

CABLE: Cable used for information transmission is Fiber-optics, also called OPTICAL FIBER.

It is a technology that allows light to travel along thin glass or plastic wires. This type of cable is used most commonly in the communication industry, because digital information can be converted into light pulses that move along the length of the wire. Examples of the kinds of information that can pass through a fiber-optic cable are : Telephone calls, the internet and television.

Means of transmitting information

1. Fax Machine
2. Mobile Phone
3. Telegraph
4. Television
5. Radio
6. Satellite
7. Internet

GENERAL EVALUATION

1. What is information transmission?
2. Explain modern method information transmission.
3. Explain space communication.
4. State the differences between the modern and ancient methods of information transmission.

READING ASSIGNMENT

Hiit @ Schools, Data Processing for Senior Secondary Education, pgs 25 -29.

WEEKEND ASSIGNMENT

1. There are ……… types of information transmission.   A.       3   B.   6       C.   2     D.         5
2. The type of communication satellite uses is called ……..   A.       Satellite communication       B.   Space communication   C.       Wireless communication       D.   Cable communication
3. There is need for       ……… in satellite communication so as to allow the receiver to receives signal.   A.   Battery   B.       Antenna C. Cable       D.   Printer
4. The following are devices used for wireless communication except.     A.   Phone      

1. Satellite TV   C. Typewriter D.   Wireless computer parts

1. Example of the kind of information that can pass through a fiber - optic cable is.  

1. Processed information   B.   Telephone calls   C.   Dissemination   D. None of the above

THEORY

1. State the types of information transmission.
2. Write short notes on types of information transmission.