TELEVISION Diagram: MOBILE PHONES When phone is on, it is constantly checking for incoming calls and looking for the CELL SITE with strongest power. Sound Electrical Radio waves Transmitted via microwaves Electrical energy Sound energy CD PLAYER A physical pattern is recorded as data on a CD series of flats “a and bumps exists on what appears to be a flat disc surface” Photodiode light energy electrical energy – Transmission channel digital signals are converted from the – original signal, amplified and converted to sound by the speaker
TELEVISION Diagram: MOBILE PHONES When phone is on, it is constantly checking for incoming calls and looking for the CELL SITE with strongest power. Sound Electrical Radio waves Transmitted via microwaves Electrical energy Sound energy CD PLAYER A physical pattern is recorded as data on a CD “a series of flats and bumps exists on what appears to be a flat disc surface” Photodiode – light energy electrical energy Transmission channel – digital signals are converted from the original signal, amplified and converted to sound by the speaker
Senior_Science_Notes_-_Information_Systems_2.docx