What is program counter in computer architecture?
A program counter is a register in a computer processor that contains the address (location) of the instruction being executed at the current time. As each instruction gets fetched, the program counter increases its stored value by 1.
Where is the program counter?
In a simple central processing unit (CPU), the PC is a digital counter (which is the origin of the term “program counter”) that may be one of several hardware registers. The instruction cycle begins with a fetch, in which the CPU places the value of the PC on the address bus to send it to the memory.
How are program counters used?
The program counter, PC, is a special-purpose register that is used by the processor to hold the address of the next instruction to be executed. The PLA automatically updates the PC to point to the next instruction during the op-code decode cycle.
What is program counter in MIPS?
The Program Counter (PC) is a register structure that contains the address pointer value of the current instruction. Each cycle, the value at the pointer is read into the instruction decoder and the program counter is updated to point to the next instruction.
What is program counter Class 11?
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 program counter PC )? Mcq?
The program counter holds the memory address of the next instruction to be executed, whereas, the address of the instruction in execution is stored in Memory Address Register (MAR).
Why is program counter needed?
What is the size of program counter?
PC is a 16-bit register. It contains a memory address. PC contains that very memory address from where the next instruction is to be fetched for execution.
What is clock and program counter?
Clock and Program CounterA program counter is a register in a computer processor that comprises the address (location)of the instruction being executed at the current time. As each instruction gets fetched, theprogram counter increases its stored value by 1.
How many bits does the program counter have?
The program counter (PC) also has 12 bits and it holds the address of the next instruction to be read from memory after the current instruction is executed. The PC goes through a counting sequence and causes the computer to read sequential instructions previously stored in memory.
What is true program counter?
What is true about Program counter? A. It is an 8-bit register, which holds the temporary data of arithmetic and logical operations.
What is program counter, PC )? Mcq?
How many bits is a program counter?
PC is a 16-bit register. It contains a memory address.
What is the width of program counter?
The width of the program counter in 8051 is 16 bit wide. This is also called instruction pointer. The function of the program counter is which instruction to be executed next.
How many bytes is a program counter?
The program counter is simply the location of the instruction being executed, and so it will change based on the processor architecture. That is, a 64 bit architecture will need 64 bits to hold the program counter, a 32 bit will need 32, and so on.