GeezerVison

byte

Datatype for bytes, 8 bits of information storing numerical values from 127 to -128. Bytes are a convenient datatype for sending information to and from the serial port and for representing letters in a simpler format than the char datatype. The first time a variable is written, it must be declared with a statement expressing its datatype. Subsequent uses of this variable must not reference the datatype because Processing will think the variable is being declared again.

•  // Declare variable 'a' of type byte
  byte a;
  
  // Assign 23 to 'a'
  a = 23;
  
  // Declare variable 'b' and assign it the value -128
  byte b = -128;
  
  // Declare variable 'c' and assign it the sum of 'a' and 'b'.
  // By default, when two bytes are added, they are converted
  // to an integer. To keep the answer as a byte, cast them
  // to a byte with the byte() conversion function
  byte c = byte(a + b);
  

• byte var
• byte var = value

• varvariable name referencing the value
• valuea number between 127 to ‑128

• int
• float
• boolean