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Across 4. combo of input, processing, memory, stogae, output 6. smallest unit of computer memory 7. storage device that reads data using laser optics 10. control center of the computer 11. mechanism used to enter data into a computer system 13. 1024 bytes 15. components or equipment of a computer system 16. one billion bytes 18. eight bits 19. storage locations for instructions and data used by the computer 20. system of letters, words, numbers, and special symbols used to communicate with a computer 21. four bits or 1/2 byte

Down 1. mechanisms used to present data in a useable form 2. allows application programs to interact with the computer's hardware 3. computer programs that perform specifc tasks like word processing 5. several computers linked into a single system 8. device used to sotre info on a magnetic disk 9. it presents info using sound, graphics, animation, and video 12. numbers, alphabetic characters, words, special symbols 14. one million bytes 17. series of step-by-step instructions that tell computer what to do and when