Computing Systems

1. A piece of software, composed of instructions
4. Also known as the CPU, this component executes the instructions of the programs
5. An illusion that a computer is executing several programs at the same time
8. The fundamental program which controls everything that a computer does
10. Real world data signals received by the computing system
11. This describes data which disappears when the power is turned off
12. The physical components of a computing system
13. Files that the user works on, such as images, documents, etc
14. Stores the data and programs even when the computer is turned off

2. Data signals sent by a computer into the real world
3. The programs which a computing system has installed
5. The component where the data and programs are stored while they are in use
6. How different computing systems can send signals to each other
7. This describes data which lasts even with no power supply
9. Also known as The processor, this component executes the instructions of the programs