Signed (+/-)16-bit Integers
Consider two-byte (16-bit) integers:
2**16 = 65,536 possible numbers:
000016 0
000116 1
000216 2
000316 3
. . .
7FFE16 32,766
7FFF16 32,767
800016 -32,768
800116 -32,767
800216 -32,766
. . .
FFFC16 -4
FFFD16 -3
FFFE16 -2
FFFF16 -1