Modern buildings are being built with pre-installed wiring capable of digital transmission. At the same time, old buildings are being modernized in order to use benefits of digital transmission. However, some of them might be using telephone lines for internet access. Unfortunately, telephone lines can transmit only analog signals. If computer needs to access network through the telephone lines, the ...
There are two possible ways of signal transmission in data network - digital and analog.
Computers use electrical signals for communication over the network. The voltage of the signal determines its strength and pressure. While computer generates electrical signal, it is possible that data would travel in electric current form, light pulses form, or wavelength form, depending on the type of ...
