- 1 What is program counter explain example?
- 2 What is the use of program counter?
- 3 What is the program counter in a CPU?
- 4 What is the function of stack pointer and program counter?
- 5 What is the purpose of IP register?
- 6 Why program counter is 16 bit register?
- 7 How do you calculate program counters?
- 8 What is the difference between microprocessor and microcontroller?
- 9 Which data is stored in program counter?
- 10 Why stack pointer is used?
- 11 What is the difference between the stack and stack pointer?
- 12 What is the difference between program counter and instruction register?
- 13 How is stack accessed?
What is program counter explain example?
A program counter is a register in the CPU containing the address of the next instruction to be executed from memory. For example, when your computer is turned on, a signal places the decimal number F000 into the CPU. This action tells the computer to look at the first instruction on the motherboards flash memory chip.
What is the use of program counter?
A register in the control unit of the CPU that is used to keep track of the address of the current or next instruction. Typically, the program counter is advanced to the next instruction, and then the current instruction is executed.
What is the program counter in a CPU?
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.
What is the function of stack pointer and program counter?
Stack pointer holds the address of the last program request in a stack while the program counter holds the address of the next instruction that should be executed.
What is the purpose of IP register?
A special- purpose register, usually called the instruction pointer ( IP ) or program counter (PC), keeps track of what instruction is being executed.
Why program counter is 16 bit register?
Thus these registers are used to store the memory locations where the Program Counter and Stack pointers point to and as we discussed earlier address of a memory location is of 16 bit, so therefore these registers are of 16 bit so that they can store the 16 bit address as data in these registers.
How do you calculate program counters?
A program counter is one of the register used in computer architecture and os. It holds the address of next instruction to be executed. After instruction is executed, it will incremented by one,(PC =PC +1) moreover program counter will be point to the next instruction.
What is the difference between microprocessor and microcontroller?
Microprocessor consists of only a Central Processing Unit, whereas Micro Controller contains a CPU, Memory, I/O all integrated into one chip. Microprocessor uses an external bus to interface to RAM, ROM, and other peripherals, on the other hand, Microcontroller uses an internal controlling bus.
Which data is stored in program counter?
The Program Counter (PC) The program counter (sometimes called instruction pointer) is a special-purpose register that contains the memory address of the next instruction to be executed. Every instruction is fetched from external memory at the address in the program counter, and stored in the instruction register.
Why stack pointer is used?
The Stack Pointer (SP) register is used to indicate the location of the last item put onto the stack. When you PUT something ONTO the stack (PUSH onto the stack), the SP is decremented before the item is placed on the stack.
What is the difference between the stack and stack pointer?
The stack is a LIFO (last in, first out) data structure implemented in the RAM area and is used to store addresses and data when the microprocessor branches to a subroutine. The Stack Pointer register will hold the address of the top location of the stack.
What is the difference between program counter and instruction register?
The program counter (PC) holds the address of the next instruction to be executed, while the instruction register (IR) holds the encoded instruction. Upon fetching the instruction, the program counter is incremented by one “address value” (to the location of the next instruction).
How is stack accessed?
Explanation: The stack is accessed using a pointer that is implemented using SP and SS registers. Explanation: The data is stored from top address of the stack and is decremented by 2. At that time, the stack pointer is incremented by 2.