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Where is a program stored?

The programs are stored on the disk (or other permanent storage. It does not need to be a disk, it can be on a network or any other place such as a ROM). When you start a program the parts of it which are needed are loaded into the main memory (the RAM).

Where is the first program that a computer runs stored?

First, your computer CPU starts and fetches instructions from the BIOS stored in your ROM. The BIOS start the monitor and keyboard. It also performs some basic checks to make sure your computer is working properly.

When a computer start the first program is run from the?

The first thing a computer has to do when it is turned on is start up a special program called an operating system. The operating system’s job is to help other computer programs to work by handling the messy details of controlling the computer’s hardware.

How does a program run?

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.

What happens when you open a program?

Once you run a program, the operating system allocates a runtime process for the program to utilize. This process helps allocate memory for the program, setup any resources that are needed, and begin execution of the program on the CPU using a thread. Once a program is finished, the opposite happens.

What are the steps taken by CPU to run a program?

Steps in Instruction Execution by CPU:

  • Fetch instruction.
  • Decode information.
  • Perform ALU operation.
  • Access memory.
  • Update register file.
  • Update the Program Counter (PC)

Does a compiler execute a program?

A compiler takes the program code (source code) and converts the source code to a machine language module (called an object file). So, for a compiled language the conversion from source code to machine executable code takes place before the program is run.

How a program is loaded into memory and then executed?

We get an executable binary file when we reach the linkage editor point. As the book says, The program must be brought into memory and placed within a process for it to be executed. Before the program is loaded into the memory, the binary executable file generated by the linkage editor is stored in the hard disk.