MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -Explanation: The size of the main memory depends on the size of the address bus of the CPU. The main memory mainly consists of RAM and ROM, where RAM contains the current data and programs and ROM contains permanent programs like BIOS.

Detailed explanation-2: -A computer system has an address bus with 8 parallel lines. This means that the address bus width is 8 bits. The capacity of each memory location is 16 bits (i.e. it corresponds to a word with a length of 16 bits).

Detailed explanation-3: -It also determines the maximum size of your RAM. So if you have an address bus width of 10, you can access 2 ^ 10 = 1024 addresses, which is equivalent to 1 KB of RAM memory. If you have an address bus of width 32, you can access 2 ^ 32 = 4294967296, addresses, which is around 4 GB of RAM memory.

Detailed explanation-4: -Explanation: The secondary memory is independent of the address bus. It increases the storage space. It is implemented in the form of magnetic storage devices.

Detailed explanation-5: -Hence, the address bus width is 10 bits. The data bus of 8 bits will be required to write/read data at each 8-bit memory location.