Unit 5 - Data and Society
Lesson 2: Patterns and Representation
- Decode: to change how information is represented so that it can be read by a person
- Encode: to change how information is represented so that it can be read by a computer
Lesson 4: Representing Images
- Pixel: short for "picture element", the fundamental unit of a digital image, typically a tiny square or dot that contains a single point of color of a larger image.
Lesson 6: Keeping Data Secret
- Decrypt: to change information so that its hidden meaning is shown
- Encrypt: to change information so that its meaning is hidden