Data Types

• numbers
• byte 0 - 255
• space saving! use this when possible!
• int
• handy for negative numbers and most other uses bigger than a byte
• -32,768 to 32,767
• long
• -2,147,483,648 to 2,147,483,647
• Four times bigger than a byte
• Do you REALLY need numbers this size? Only use this when necessary

• char
• also a byte
• but you can use ASCII characters instead of numbers
• google for "ASCII table" to see what number is what character
• Handy to know for sensors and other stuff that uses serial. Bytes = chars.

• arrays
• an array is a kind of list of other data types
• can be any data type
• can be set to be whatever size you need
• arrays are numbered starting from 0
• Let's play with this