A 32-bit OS can only address up to 4GB of memory.
A memory with a 16 bit address bus can address 216 or 65536 distinct items. If each item is 32 bits in size, then the item is 4 bytes. The size of this memory is then 262144 bytes. (256Kb)
32 bit processor can access 4294967296 bit memory adderss.
Maximum addressable memory is the most information a computer can store without having to delete something to make room for space. The maximum addressable memory also takes into consideration the files that cannot be erased, like the operating system files.
32 bit means the number of address lines are 32. it can point to 2^32(2 to the power of 32) address locations in memory. the 32 bit refers that a 32 bit of information can be executed simultaneously that is copying or reading writing takes 32 bit of data at a time. the system bus contains 32 lines of wires to hold the data. while the 64 bit represents the number of address lines are 64 and data can handle 64 bit at once same as 32 bit. all present using PCs are 64 bit.
32 bit operating systems can only address 4GB of memory 64 bit operating systems can address 4 petabytes of memory(1 048 576 gigabytes).
32 bit address line can access 4GB of memory. As 2^10 -> 1KB; 2^20 -> 2MB; 2^30 -> 1GB and so on.... 32 bit gives (2^30) * (2^2) = 1GB * 4 = 4GB;
it has 32 kB of internal memory
The 8086/8088 can address a maximum of 220, or 1,048,576, or 1 MB of memory.
A 64-bit operating system can directly address more memory. This makes it "better" if you have more memory than can be addressed in 32 bits ... 4 GB. If you have 4 GB of RAM or less, there's essentially no difference, and the 32 bit system may even be slightly faster.
32 bit address bus can access more than 4 gigabytes (232) of memory. Sandeep Kr. Singh (MCA)
32 bit OS support max 2^32 bit = 4GB RAM