The byte type stores a 1-byte (8-bit) unsigned integer number, from 0 to 255.
Warning
The byte type is provided for compatibility with Arduino. However, it is a non-standard extension. The standard C++ type for storing an 8-bit unsigned integer is unsigned char; we recommend using that instead. (Your code will still work on an Arduino).
byte b = 134;
License and Attribution
Portions of this page were adapted from the Arduino Reference Documentation, which is released under a Creative Commons Attribution-ShareAlike 3.0 License.