Bits, bytes, words and double words
•Bit
•12dec  1100bin    value = 0 or 1  
•Byte (unsigned char)
•8 bits    00001100bin   0Chex 
•value 0dec - 255dec or 0hex - FFhex     
•Word (unsigned short)
•16 bits  0000000000001100bin    000Chex
•value 0dec - 65535dec or 0hex - FFFFhex 
•Double word (unsigned int, unsigned)
32bits 00000000000000000000000000001100bin
•value 0dec - 4294967295dec or 0hex - FFFFFFFFhex
•