Representing a Double-Word

(Image-1)

A double-word (Image-1)

Is a group of two consecutive Words
A double-word combines 4 bytes, or 8 nibbles, or 32 bits

The bits

Counted from right to left, start at 0 and end at 31 (Image-1)

(Image-2)
 

Considered as a group of 32 bits (Image-2)

The most right bit, bit 0, is called the Low Order bit or LO bit or LOBIT
The [...]

Representing a Word

(Image-1)

A word

Is a group of 16 consecutive bits

The bits

Are counted from right to left starting at 0 (Image-1):

Considered as a group of 16 bits (Image-1)

The most right bit of a word, bit 0, is called the least significant bit or Low Order bit or LO bit or LOBIT
The most left bit, bit 15, is called [...]