Analog vs. Digital

Analog (A) Europeans say “analogue” Analog data

represented by some form of continuous signal / representation

Examples: sound waves records VHS

Digital (D) Digital data

represented by discrete quantities (not continuous)

Examples CDs DVDs

A/D Conversion

Sampling

A/D Applications Sound recordings CD storage

1. Given sound wave2. Take samples3. Convert samples to binary4. Store onto CD

Temperature sensing computer storage1. Temperature changes continuously2. Take samples3. Convert samples (values) to binary4. Store on the computer