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Across 1. he electronic circuitry within a computer that carries out the instructions of a computer program 6. Putting something into operation 7. A computer program or system ceases to respond to inputs 10. Remove power from a computer's main components in a controlled way 12. An image that represents an application 13. An area or window on a computer screen in which icons are arranged 14. A device that provides battery backup when the electrical power fails 16. Copying into an archive file of computer data that is already in secondary storage 18. An indicator used to show the current position for user interaction on a computer monitor 19. The first widely-sold personal computer with a graphical user interface 20. A storage medium that is used with computers 21. A unit of data storage capacity

Down 2. The transmission of a file from one computer system to another 3. Computer memory that can be accessed randomly 4. An interactive computer application for organization, analysis and storage of data 5. An act or instance of transferring something 8. A unit of digital information representing a binary number 9. A measure of spatial printing, video or image scanner dot density 10. A set of instructions that tells a computer what to do or how to perform a task 11. Powering on the computer and starting the operating system 15. The computers that most of us use on a daily basis for work or personal use 17. A type of disk storage composed of a disk of thin and flexible magnetic storage medium 18. A software application or an operating system stops functioning properly and exits