During the execution of a program which gets initialized first? Explanation: For the execution of a process first the instruction is placed in the PC.

Which register is used in program execution?

These are various registers required for execution of instruction : Program Counter (PC), Instruction Register (IR), Memory Buffer (or Data) Register (MBR or MDR), and Memory Address Register (MAR).

Which register is used for sequential execution of instruction?

Program counter (PC):

The program counter is a register (memory cell) ! This register contains the address (location in memory) of the next instruction after the CPU finishes executing the current instruction in the instruction register.

Which pointer is used to sequence the execution of instructions?

The program counter (PC), commonly called the instruction pointer (IP) in Intel x86 and Itanium microprocessors, and sometimes called the instruction address register (IAR), the instruction counter, or just part of the instruction sequencer, is a processor register that indicates where a computer is in its program ...

Which of the following is sequence the execution of instruction?

The correct answer is Fetch instruction, Decode instruction, Read operands, Execute instruction and Store data. Steps in the instruction cycle: First of all, the opcode is fetched by the microprocessor from a stored memory location.

control sequence to execute a complete intruction

39 related questions found

Which of the following register deals with sequencing the execution of instructions?

Program Counter: This register is used to sequence the execution of the instructions. The function of the program counter is to point to the memory address from which the next byte is to be fetched.

Why registers and memory are used for processing?

Registers hold the operands or instruction that CPU is currently processing. Memory holds the instructions and the data that the currently executing program in CPU requires. ... Register holds the small amount of data around 32-bits to 64-bits.

Which component decides the order in which a set of instructions is executed?

The program counter stores the address of each instruction and tells the CPU in what order they should be carried out. When a program is being executed, the CPU performs the fetch-decode-execute cycle, which repeats over and over again until reaching the STOP instruction.

Is register primary memory?

3 Answers. CPU registers are often counted as part of primary memory (since they are directly accessed by the CPU - see Wikipedia) and are often volatile, so it seems likely that the expected answer is (1).

What happens in the execute stage?

Execute Stage: The control unit of the CPU passes the decoded information as a sequence of control signals to the relevant functional units of the CPU to perform the actions required by the instruction, such as reading values from registers, passing them to the ALU to perform mathematical or logic functions on them, ...

How do registers work during program execution?

The instruction read from memory is placed in the Instruction register (IR). The Temporary Register (TR) is used for holding the temporary data during the processing. The Input Registers (IR) holds the input characters given by the user. The Output Registers (OR) holds the output after processing the input data.

Which is the first operation during fetch cycle?

The first step the CPU carries out is to fetch some data and instructions (program) from main memory then store them in its own internal temporary memory areas. These memory areas are called 'registers'. This is called the 'fetch' part of the cycle.

What is the procedure of execution of program?

Execution Flow

1) C program (source code) is sent to preprocessor first. ... 2) Expanded source code is sent to compiler which compiles the code and converts it into assembly code. 3) The assembly code is sent to assembler which assembles the code and converts it into object code. Now a simple. obj file is generated.

What is the execution of a program?

Execution is the process of running a program or the carrying out of the operation called for by an instruction.

How is program executed?

How Does a Program Run? The CPU runs instructions using a "fetch-execute" cycle: the CPU gets the first instruction in the sequence, executes it (adding two numbers or whatever), then fetches the next instruction and executes it, and so on.

How does instruction cycle help in execution?

The processing involved in the execution of a single instruction is termed as Instruction Cycle. This processing is done in two steps i.e. fetch and execute. To execute an instruction the processor first reads an instruction from the memory which is called fetching and then the fetched instruction is executed.

Which are stages of instruction cycle?

The instruction cycle consist of sequence of four steps. These four CPU operations includes Fetch , Decode , Execute and Store. The CPU performs number of machine cycle rounds to complete fetch , decode, execute and store operations.

What are the 3 stages of the fetch execute cycle?

The fetch-execute cycle

• The CPU fetches the instructions one at a time from the main memory into the registers. One register is the program counter (pc). ...
• The CPU decodes the instruction.
• The CPU executes the instruction.
• Repeat until there are no more instructions.

What are registers in a CPU and how they work during program execution?

In Computer Architecture, the Registers are very fast computer memory which are used to execute programs and operations efficiently. This does by giving access to commonly used values, i.e., the values which are in the point of operation/execution at that time.

What is registers and primary memory?

The main difference between register and main memory is that a register is a small and fast storage inside the CPU that holds data temporarily while the main memory is a storage component in the computer that stores data and programs currently used by the CPU. ... In brief, registers are faster than the main memory.

Which of the following register is used to keep the track of execution of the program?

Solution(By Examveda Team)

Program counter : 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.

Which type of register is instruction register?

The instruction register is another type of central processing unit register that is used to store the instruction that is currently executed or that will be decoded. In processors, the instruction register holds each instruction in it, and then it can be executed by the processors.

What does instruction register do?

An instruction register holds a machine instruction that is currently being executed. ... A variety of registers serve different functions in a central processing unit (CPU) – the function of the instruction register is to hold that currently queued instruction for use.

Which of the following is the correct sequence of stages of data processing in a computer?

The four main stages of data processing cycle are: Data collection. Data input. Data processing.