Editing Bitwise operation (section)

===Bit addressing===
If the width of the register (frequently 32 or even 64) is larger than the number of bits (usually 8) of the smallest addressable unit, frequently called byte, the shift operations induce an addressing scheme from the bytes to the bits.
Thereby the orientations "left" and "right" are taken from the standard writing of numbers in a [[place-value notation]], such that a left shift increases and a right shift decreases the value of the number ― if the left digits are read first, this makes up a [[big-endian]] orientation.
Disregarding the boundary effects at both ends of the register, arithmetic and logical shift operations behave the same, and a shift by 8&nbsp;bit positions transports the bit pattern by 1&nbsp;byte position in the following way:
: {|
| [[Little-endian]] ordering:
| a left shift by 8 positions increases the byte address by 1,
|-
|
| a right shift by 8 positions decreases the byte address by 1.
|-
| [[Big-endian]] ordering:
| a left shift by 8 positions decreases the byte address by 1,
|-
|
| a right shift by 8 positions increases the byte address by 1.
|}