ICT has different types of applications for different fields. These fields are explained below:

The word tele means distance. The word conference means discussion, consultation. It be simply defined as the process of holding conference via telephone or network connection. Teleconferencing is the live exchange and mass circulation of information among several person and machine remote from one another but linked by telecommunication system.

With videoconferencing people can interact as if they were talking face to face with both images and sound relay in real time. Thus far video conferencing has been used in the following fields; Business, Distance learning, Home offices, Legal environment and Telemedicine.

Telepresence is also called virtual presence, is a technique to create a sense of physical presence at a remote location using multimedia such as sound, vision and touch.

Telecommunication and Networking

Telecommunication is the process of sending and receiving electrical signal over a large distance by electronic means. A single telecommunications circuit consist of two stations, each equipped with a transmitter and a receiver. There are certain mediums of telecommunication systems such as coaxial cables, fiber optics, radio frequency and air etc. a telecommunication network is a network of nodes and links and the communication signal passes through one link to another.

It is a generic (common) term referring to the use of computers for communication. The term includes communication using computers linked either one-to-one or in networks of interlinked computers. The most common use of interlinked computers now is by the way of the internet and Intranet. Intranet is a private network which serves a single organization, such as a corporation.

The most common forms of messaging are emails, paging, Short Message Service (SMS), Enhanced Message Service (EMS), Multimedia Message (MMS) and instant Messaging.

Information Search, Retrieval and archival

Information Retrieval is the science of searching for documents, information within documents, and metadata about document, as well as that of searching relational databases and the World Wide Web. An Archival Information System consists of an organization of people and systems that has accepted the responsibility to preserve information and make it available for a designated community.

A gadget is a small technological device or an appliance that has a particular function. Examples of ICT gadgets include Computer, Automated teller machine (ATM), Dispensing machine, Radio sets, Television set, Fax machine, Telephone, GSM, etc.

Cell phones, also known as mobile phones or wireless phones, are hand-held phones with built-in antennas. Unlike home phones, cell phones can be carried from place to place with minimum fuss.

A computer is a programmable machine that inputs, processes and outputs data. A computer system refers to the computer and all its equipment.

Fax machine is a short form for facsimile machine. It is a device that can send or receives text and pictures (graphics) over a radio broadcast or a telephone line.

Automated Teller Machine is also known as automated banking machine (ABM) or cash machine is a computerized telecommunication device that provides the client of financial institution with access to financial transactions in public space without the need for a cashier, human clerk or a bank teller.

A dispensing machine is a machine that

gives items to customers automatically, after the customer inserts currency or credit into the machine.

Point of sale machine

Electronic retail payment device which reads a customer’s bank’s name and

account number when a bank card or

credit card is swiped through a magnetic stripe reader , contacts the bank and if

funds are available transfers the customer approved amount to the seller’s

account , and prints a receipt.

A radio receiver (commonly also called a

radio) is an electronic device that receives radio wave and converts the information carried by them to a useable form. It is used with an antenna. The antenna intercepts radio waves (electro-magnetic) and converts them to tiny alternating current which are applied to the receiver, and the receiver extracts the desired information.

Television or TV is a telecommunication medium used for transmitting sound with moving images in monochrome (black and white), or in color , and in two or

three dimensions