When we want to open an application, we use the mouse to send that command to the operating system. The following process then takes place:
1- The operating system finds the application on the hard disk, sends a copy of it to the RAM, and loads it onto the screen.
2- The program is now the active application. It receives data from the keyboard and sends instructions to the microprocessor through the operating system.
3- When we save the document, the operating system looks for free space on the hard disk and transfers the data from the memory to that space.
4- To print, click on IMPRIMIR, and the word processor will send the command to the operating system, which sends the appropiate signals to the printer.
5- When we close the word processor, the operating system deletes the application from the memory, though not from the hard disk
