Y8 Hwk 3 - Traffic Lights

Why is it important to ensure a control system, such as the algorithms in a traffic light, function correctly?

• It isn't important as the errors will always fix themselves.

• as long as the program doesn't crash its OK.

• if the program doesn't work correctly the system may fail

what will this snippet of flowchart do?

• turn green off and amber on. then wait for 7 seconds, then turn red on and green on

• turn red on and green on. then wait for 7 seconds, then turn green off and amber on

• turn red on and green on. then turn green off and amber on

what is this symbol an example of?

• start/stop

• input/output

• decision

• process

This series of flowchart is an example of ...

• sequence

• selection

• iteration

What will happen if temp = 8

• Fire will turn on

• Fire will turn off

• Nothing

Which flowchart symbol is this?

• Start/Stop

• Process

• Decision

• input/Output

Which flowchart symbol is this?

• Start/Stop

• Process

• Decision

• input/Output

Which flowchart symbol is this?

• Start/Stop

• Process

• Decision

• input/Output

Which flowchart symbol is this?

• Start/Stop

• Process

• Decision

• input/Output

This flowchart is an example of

• sequence

• selection

• iteration