Bit (bit) <bytes (byte) <word
memory of the computer, the smallest unit of storage is the "bit ( 'bit)" ,. 8 th "bit" constitutes a " byte (byte) ", bytes of the memory of the basic unit also addressing unit ,
- For example, a computer memory is 2GB, refers to the total memory of the computer 2 × 1024 × 1024 × 1024 bytes.
The stronger the performance of the computer, the more "bits" can be processed by one operation,
- 16-bit arithmetic for example, a computer can handle 16 "bits", i.e., two "byte", referred to as a "word."
- While the 32-bit computer 32 can handle one operation "bits", i.e., four "byte", referred to as a "word."
Therefore, a "word" several "byte" configuration related and computer models.
- For example, 32-bit computer, a "word" is four "bytes."
- The 16-bit computer, a "word" is the two "bytes."
PS: 32 bit compiler system, int account for long and four bytes . While the 64-bit operating system, int accounted for four bytes , in the range -2147483648 to 2147483647 (ten digits). long occupies 8 bytes , long range data becomes: -2 63 is ~ 2 63 is -1. (Long platform due differ, 4 bytes, 8 bytes and 6 bytes of three.)
