ADMS 2511 Chapter Notes -Distributed Computing, Network Operating System, Distance Education

• School: York University
• Department: Administrative Studies
• Course: ADMS 2511
• Professor: Cristobal Sanchez- Rodriguez

Document Summary

A telecommunications system: consist of hardware and software that transmit information from one location to another. These systems can transmit text, data, graphics, voice, documents or full motion video information. They transmit this information with two basic types of signals: analog and digital. Analog signals: are continuous waves that transmit information by altering the characteristics of the waves. Analog signals have two parameters: amplitude and frequency. For example, voice and all sounds are all analog, travelling to human ears in the form of waves. The greater the height (or amplitude) of the waves, the louder the sound, the more closely packed the waves, the higher the frequency or pitch. Digital signals: discrete pulses that are either on or off, representing a series of bits (0s and 1s) This quality allows them to convey information in a binary form that can be clearly interpreted by computers.