MICROPROCESSOR AND MICROCONTROLLER

Detailed explanation-1: -These 8-bit registers are used for the storing the memory addresses that can be used to access internal and external data/code.

Detailed explanation-2: -A register is a part of the processor that can hold a bit pattern. On the MIPS, a register holds 32 bits. There are many registers in the processor, but only some of them are visible in assembly language. The others are used by the processor in carrying out its operations.

Detailed explanation-3: -As complete 32-bit data registers: EAX, EBX, ECX, EDX. Lower halves of the 32-bit registers can be used as four 16-bit data registers: AX, BX, CX and DX. Lower and higher halves of the above-mentioned four 16-bit registers can be used as eight 8-bit data registers: AH, AL, BH, BL, CH, CL, DH, and DL.

Detailed explanation-4: -From the instruction set perspective, Intel processors have eight general purpose registers in 32-bit mode, and sixteen general purpose registers in 64-bit mode, however, from the internal hardware perspective, Intel processors have many more registers.