Information & Communication Technology-1st Year

 Creative  Question For H.S.C -1st year 1.The main problem with microwave communication is that the curvature of the earth, mountains and other structures often block the line-in-sight. Due to this reason, several repeater stations are normally required for long distance transmission, which increase the cost of data transmission between two …

Data Communication and Computer Network

Topic: Mobile and Wireless Communication(For H.S.C 2nd Year) Chapter-6, Lecture no-1   Lecturer-1, Digital phone 1.      Definition of Digital telephone Digital telephone is the use of digital electronics in the provision of digital telephone service and system. Telephone invented in 1876, Inventor Alekgender Grahambal. VOIP(Voice over internet protocol)it’s also  one …

Data transmission Speed

                                                                                    Data transmission speed A term used to describe the data-handling capacity of a communications system is bandwidth. Bandwidth is the range of frequencies that is available for the transmission of data. The wider the bandwidth of a communications system, the more data it can transmit in a given period …