Q.What is the function of Register PC?

The Program Counter (PC) holds the address of the next instruction to be fetched and executed. It increments automatically after each fetch so the program runs in sequence. …

[!TLDR]

The Program Counter (PC) points to the address of the next instruction and steps through the program automatically.

The Program Counter is a special 16-bit register that always holds the memory address of the next instruction the CPU will fetch. After each instruction is fetched, the PC increments automatically so execution proceeds in sequence. When a jump, call or return instruction runs, the PC is loaded with a new address, changing the flow of the program. Being 16 bits wide, the PC can address up to 64 KB of program memory. The programmer cannot write …