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1. Key words

   • computational thinking
     • The use of computers to solve problems
   • Abstraction
     • representing " real world" problems in a computer using variables and removing unnecessary elements
   • Decompostion
     • Breaking down a large problem into smaller problems
   • Algorithmic thinking
     • identifying the steps involved in solving a problem
   • pattern recognition
     • Being aware of any repetition in solving the task, this pattern can simplify the steps needed to solve the problem and furthermore, if the pattern can be made general, it can be used to solve other problems as well.

2. ·

   • Utility software
     • File compression
     • disk defragmentation
       • file repair
     • disk copying and formatting
     • anti virus
     • back ups