Although it is very simple knowledge, but ask the people around, there are still some don't know ~
Let me spread the word about Daji here
Because the address space of the 32-bit operating system is 32 bits, the total number of addresses is 2^32, and each address corresponds to 1Byte memory space, so the maximum memory space managed by the 32-bit operating system is limited to 2^32Byte=2^32Byte=4 ^ 1024^1024^1024Byte, ie
4,294,967,2964,294,967,296 bytes equals 4GB.
In addition, add a point, 1Byte=8bit, that is, each address corresponds to 8 bits in memory, which is why the size of the smallest variable char variable in a C++ program is 1Byte.
2 to the power of 32 bytes is equal to 4,294,967,2964,294,967,296 bytes, converted to GB needs to be divided by 1024^3
Equal to 10243232 GB≈4 GB
Therefore, 2^32 bytes is approximately equal to 4GB.
