2.1.1-2.1.5 Computational thinking

• In which situation may it not be possible to determine the order of steps needed to solve a problem?


  the problem may be highly event driven and non sequential in nature
• A program is written to ask the user for a number. It generates this many random numbers in the range 0-100. If any number generated was greater than 90 it outputs 'higher number generated'. Where is a decision being taken in this program?


  Checking the generated number is greater than 90
• benefit of concurrent processing


  increased program throughput
• What can be described as, 'When more than one processor is executing separate instructions at the same time'?


  parallel processing
• Which computational thinking skill can be described as, 'identifying decision points for branching or iteration'?


  thinking logically
• which programming concepts results in decisions need to be taken?


  selection and iteration
• Which computational thinking skill describes the consideration of all the inputs and outputs required for a system before it is implemented?


  thinking ahead
• What do we mean when we talk about decision points in a program?


  any points where the program can take an optional route based on a condition
• What computational thinking skill includes breaking a problem down?


  thinking procedurally
• Why is it not always possibly to apply the concepts of concurrency to a problem?


  the problem may not lend itself to two actions happening at the same time
• Using a flowchart to design an algorithm is an example of what?

  thinking logically
• What is the purpose of a structure diagram?


  break a problem down to show the order of program modules
• When creating a structure diagram using top-down modular design what do the lowest level leaf nodes end up becoming in the finished program?


  modules, procedures and functions