Chapter 17 The world of computers

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Across
  1. 1. a piece of code which is capable of copying itself and typically has a detrimental effect, such as corrupting the system or destroying data
  2. 3. able to be used with a specified piece of equipment or software without special adaptation or modification
  3. 5. a unit of information equal to one million or, strictly, 1,048,576 bytes
  4. 7. a computer file added to an email
  5. 8. means of sending or receiving information
  6. 10. an instruction or signal causing a computer to perform one of its basic functions
Down
  1. 2. a global computer network providing a variety of information and communication facilities
  2. 4. a code in a program which defines and carries out an operation
  3. 6. visual images produced by computer processing
  4. 9. a screen which displays an image generated by a computer