Number System and Computer Virus

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Across
  1. 2. What is the base of the Decimal Number System
  2. 3. How many number system are there
  3. 4. The most common type of virus
  4. 5. Group of 8 bit is called
  5. 6. virus It was the first virus discovered
  6. 9. Half of a byte is called
Down
  1. 1. Full form of virus
  2. 7. The program that detects the changes caused by the virus in the computer
  3. 8. system that is used to represent numbers in a computer system