32-bit Addressing

If 

a

 computer has 

32-bit addressing

, 

it

 means that each 

address

 in 

memory

 can have 32 numbers.Since each number could be 

a

 1 or 

a

 0, that means that 2^32 (four billion) addresses are available.The 

computer

 could theoretically 

address

 up to 4 

gigabyte

 of memory; however, many 

computer

 with 

32-bit addressing

 have far 

less than

 4 

gigabyte

 of 

memory

.