Assingment on telephone
Answers
Explanation:
Introduction of the Study: The present world is the world of information technology. Mobile phone is the revolutionary invention of science. This mobile has enriched our communication network. It has been possible to communicate from one corner to another by its contribution. Mobile phone is one of the important wonders of modern science. The standard of living of men has been changed by the contribution of this technology. At the beginning Telegraph was only one medium of communication. Alecgunder invented telephone in 1876. As a result, it has been possible to send the human voice to the remote. Electric sign is flown through the wire of both the telegraph and telephone. At the beginning of last century wireless was invented by Marcony which occurred revolutionary change in the communication. Consequently the necessary of adding wire by receiving & transferring not needed. In case of telephone it is set up one place which is not transferable, so problem occurs. In this situation mobile phone takes the place of telephone to overcome the problem. “Mobile Phone Service” is another name of silent revolution in Bangladesh. Mobile phone service is keeping important role in removing the digital divide. Mobile phone is contributing active role in receiving and sending information in the villages. Bangladesh enters the mobile world through the City Cell Company in 1993