Differences between 32-bit and 64-bit machine characters

1.64bit CPU has greater addressing capability and supports up to 16 GB memory, while 32bit only supports 4 GB memory
The 2.64-bit CPU can extract 64-bit data at a time, which is twice higher than the 32-bit CPU. Theoretically, the performance will be doubled. However, this is based on the 64-bit operating system and 64-bit software.

3.

The 32-bit/64-bit processor refers to the number of data digits that the CPU can process at the same time (8-bit = 1b ), generally, the machine font length refers to the number of digits in the binary number contained in the register involved in the operation. It represents the machine's precision.

For example

A computer is 32-bit long and has a storage capacity of 8 Mb. Address by word. Its addressing range is

8 Mb bytes = 8*1024*1024*8 bits. So 8 Mb/32 bit = 2 m.

The addressing range is: 0 ~ 2s-1,


Note: bits are the smallest unit of measurement data, indicating a binary information.
A word is a combination of digits and is processed as an independent unit of information. The commonly used fixed characters have 8-bit, 32-bit, and 64-bit characters. The above question is 32-bit, and 32-bit binary information can be processed once.
Bytes indicate the unit of information storage. One byte consists of eight binary numbers. The memory of a computer usually uses bytes to indicate its capacity. The above question is 8 Mb.
1 m = 1024 K 1 k = 1024 byte 1 MB = 1024*1024 bytes can represent 1024*1024*8-bit binary information

Differences between 32-bit and 64-bit machine characters