Inside the system

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Across
  1. 3. Not using wires to send and receive electronic signals.
  2. 5. A large and very fast computer that can do many jobs at once.
  3. 6. A unit of computer information that is equal to eight bits.
  4. 9. A machine that is used for printing documents, photographs, etc.
  5. 10. The main circuit board of a computer.
  6. 12. Brain and the main part of a computer system which can process data represented in binary code.
  7. 13. A mobile telephone that can be used to send and receive e-mail, connect to the Internet, take photographs, etc.
  8. 15. Designed to be used while being held in your hands.
  9. 16. The programs that run on a computer and perform certain functions.
Down
  1. 1. Electronic components of a computer.
  2. 2. Unit of measuring processor clock speed.
  3. 4. A small computer that is designed to be easily carried.
  4. 7. Finding and fixing problems in machinery and technical equipment (such as computers).
  5. 8. Devices used to input or output data into and out of a computer.
  6. 11. A mark on a computer screen that shows the place where information is being entered or read.
  7. 14. Quickly accessible location available to a computer's central processing unit.
  8. 17. The part of a computer in which information that cannot be changed is stored.