Computing Revision

Computing Revision

1. computational thinking

   • abstraction
     • removes unnecessary details to make problems less complex
   • decomposition
     • breaks down problems to make them easier to solve
   • algorithmic thinking
     • logical steps to solve a logical problem

2. syntax/logic errors

   • syntax error
     • error in the rules of the language
   • logic error
     • code runs but not how you expect it to

3. storing data

   • variable
     • data can change while the program is running
   • constant
     • data can't change while the program is running

4. sub programs

   • allow you to reuse them in other programs
   • avoids repetition so there's less lines of code
   • allow you to break down problems into smaller parts
   • functions return a value while procedures do not

5. testing

   • used to find defects before releasing a program
   • used to check a program works as expected
   • final testing
     • happens after development
   • iterative testing
     • happens during development

6. translators

   • compiler
     • translates entire source code at once
   • interpreter
     • translates source code one line at a time