Y8 Hwk 4: Subroutines

A subroutine is ...

• a small segment of the program

• a mini program within another program

• a form of iteration

• a copy of the program stored elsewhere

The flowchart symbol we use to 'call' a subroutine is ...

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• 
• 
• 

The flowchart symbol we use to create a new subroutine (i.e - we place the code after this symbol)

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• 
• 
• 

which are advantages of modular programs (programs using subroutines)

• Can re-use subroutines in other programs

• Easier to find errors

• Team members can work on a module

• Makes the code more difficult to read.

Which of the following could be classed as a sensor? tick all that apply

• Thermometer

• smoke detector

• motion detector

• cooling Fan

What is the main advantage of using sensors in our control systems?

• to add sophistication to the systems.

• The disadvantages outweigh the advantages.

• It allows us to further automate tasks, meaning that people do not need to do them manually

• they can alert people when tasks need to be completed in the control system.

This flowchart is an example of ...

• Sequence

• Selection

• Iteration

what sensor may you want to use to turn on an automated outdoor light?

• Thermostat

• Motion sensor

• Smoke detector

• pressure sensor

What would best fit into the blanked out shape? the flowchart controls the the light should turn on when its dark (the sun outputs a lower number)

• is door switch on>

• is Sun >20?

• is sun<20?

• turn fire on

what code should appear in the blanked out shape?

• is fan on?

• turn fan on

• turn fan off

• turn fire on