CIS 1200 Lecture Notes - Lecture 9: Hdmi, Sith, Memory Card

• School: University of Guelph
• Department: Computing and Information Science
• Course: CIS 1200
• Professor: John Saville

Document Summary

Everything has switched from analog to digital. Anything can be digitized (sound waves are just oscillations in the air) Analog waves- continuous waves because they are long continuous lines. Digital allows the waves to be transferred in numbers and get them perfect every time. Analog-to-digital conversion- from a smooth line to a series of numbers. Telephony- the use of equipment to provide voice communications over a distance. Feature phones- inexpensive phones that can text, call, offer pim. Smartphones- requires a data plan; can upload and download things from the internet: large screen areas, wifi, and lots of computing power. Analog-to-digital converter chip- all cell phones have one that converts voice input to waves and numbers. Digital signal processor- handles the compression work. Base transceiver station- large communications tower with antennas, amplifiers, receivers, and transmitters. Mobile switching center- central location that passes the signal along: overlap= no gaps in coverage.