Textbook Notes (368,242)
Canada (161,733)
CP102 (83)

CH8 Digital Lifestyle.docx

1 Page
Unlock Document

Computer Science
Mark Petrick

CH8 Digital Lifestyle: Managing Digital Data and Devices  Went from analog to digital  Analog/continuous waves: illustrate loudness of a sound or the brightness of the colours in an image at a given moment in time  Analog-to-digital conversion expresses complicated analog shapes, signal is measured many times each second, strength of signal at each measurement is recorded as a simple number Digital Telephony  Telephony: use of equipment to provide voice communications over a distance has shifted from an analog science to a digital one  Cell phones and smart phones have the same components as computer: processor, memory, input and output devices. They are computers  Analog-to-digital converter chips converts your voice’s sound waves into digital signals (1s and 0s that the phone’s processor can understand)  Digital signal processor: included in cellphone to handle the compression work o when you receive a call, it decompresses the incoming message  cell is a geographic area centered on a base transceiver station, which is a large communications tower with antennas, amplifiers, receivers and transmitters  when you make a phone call, a base station picks up the request for service. The station then passes the request to a central location called a mobile switching center  processor coordinates sending all the data among the other electronic components inside the phone, runs phone’s OS  OS is stored in ROM because the phone would be useless without it  Primary input devices: mic and keypad  High resolution displays are becoming more popular  Store-and-forward technology delivers texts to the appropriate phone  Multimedia message service (MMS): sends messages that include text, sound, images, video clips  Tethering: computer can
More Less

Related notes for CP102

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.