A whole number. In programming, sending the number 123.398 to an integer function would return 123. Unsigned integers (UINT) can only be positive and have a value from 0 to 255. Signed integers (INT) can be positive or negative, and their leftmost bit is the sign bit. As a result of one less binary digit in the number, the maximum value of each INT is cut in half (-128 to +127). See
integer arithmetic and
floating point.