long - Integer - 4 bytes - -2 147 483 648 to 2 147 483 647

int - Integer - 2 bytes - from -32 768 to 32 767

char - 1 ASCII character - 1 byte

String - Text - 1 byte

boolean - Boolean - 1 byte - 0 or 1, true or false

byte - Integer - 1 byte - from 0 to 255

float - Decimal number - 4 bytes - from -3.4028235E + 38 to 3.4028235E + 38

Sample program:

Download example: file.ardublock | Open Online ArduBlock

Video: