DT Theory - programmable components

Multiple Choice

What do flowcharts show?

• The speed of a program

• The memory usage of a system

• How various elements of a system relate to each other

• The number of errors in a program

Multiple Choice

What type of signal can vary up and down through a range of values?

• Digital

• Analogue

• Binary

• Feedback

Multiple Choice

What is a feedback loop in a program?

• A loop that never ends

• A loop that goes back to an earlier point to keep repeating that part of the program

• A loop that only runs once

• A loop that skips certain parts of the program

Multiple Choice

When is a time delay used in a program?

• When the program needs to speed up

• When the program needs to wait a period of time before completing an action

• When the program needs to stop immediately

• When the program needs to skip an action

Multiple Choice

What does the count function in a program do?

• It counts the number of errors

• It counts the number of loops

• It counts how many times it gets an input

• It counts the number of outputs

Multiple Choice

What shape is used to represent the start or end of a process in a flowchart?

• Rectangle

• Diamond

• Oval

• Parallelogram

Multiple Choice

What is the purpose of arrows in a flowchart?

• To show the start of the process

• To show the end of the process

• To show relationship between shapes

• To show errors in the process

Multiple Choice

What shape is used to represent input/output in a flowchart?

• Rectangle

• Diamond

• Oval

• Parallelogram

Multiple Choice

What shape is used to represent a process in a flowchart?

• Rectangle

• Diamond

• Oval

• Parallelogram

Multiple Choice

What shape is used to represent a decision in a flowchart?

• Rectangle

• Diamond

• Oval

• Parallelogram

Multiple Choice

Which of the following is NOT a use of a flowchart?

• To show how various elements of a system relate to each other

• To show the speed of a program

• To represent a process

• To represent a decision