MICROPROCESSOR AND MICROCONTROLLER

8051 MICROCONTROLLER

ARCHITECTURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
what is PROGRAM COUNTER (PC)?
A
holds the address of memory, where next executable instruction placed
B
holds the data of memory
C
16-bit register
D
it is a memory pointer
Explanation: 

Detailed explanation-1: -What Does Program Counter Mean? A program counter (PC) is a CPU register in the computer processor which has the address of the next instruction to be executed from memory. It is a digital counter needed for faster execution of tasks as well as for tracking the current execution point.

Detailed explanation-2: -The program counter (PC) is a register that manages the memory address of the instruction to be executed next.

Detailed explanation-3: -A program counter contains the memory location of the next instruction. We can view a program counter as a modern digital counter. It facilitates faster execution of the instructions.

Detailed explanation-4: -The main difference between stack pointer and program counter is that the stack pointer is a register that stores the address of the last program request in a stack while the program counter is a register that stores the address of the next instruction to be executed from the memory.

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