6.1 Automated systems

The sensor is a

• input device

• output device

• processor

• software

The alarm is a

• input device

• output device

• processor

• software

What does a microprocessor use to help it make a decision?

• A stated value

• A static value

• A stored value

• A storied value

In modern agriculture, farmers use ........................ -controlled automated systems with .......................... sensors, taps and water pipes to determine when to spray water onto a field of crops.

Which of these is not a reason why a farmer would choose to use an automated system to determine when to spray water onto a field of crops?

• Can easily work 24 hours a day, 365 days a year.

• Potentially more accurate than humans.

• Never goes on strike.

• Does not cost any money.

What is a disadvantage of using an automated system to control watering crops in a field?

• The system is unreliable.

• The system can be expensive to set up.

• Humans are better at watering crops.

• The system is too complex to set up.

The following are examples of Automated Systems except for:

• Washing Machine

• Video Recorder

• Microwave

• Knife

The following are Advantages of Automated Systems except for:

• They can carry out tasks much faster.

• They do repetitive tasks.

• Work without a break.

• They are not used in hazardous environments.

The following are examples of sensors except:

• Light sensor

• Drawing sensor

• Heat sensor

• Bump sensor

A signal having the characteristic of being continuous and changing smoothly over a given range, rather than switching suddenly between certain levels.

• Digital Signal

• Smoke Signal

• Analog Signal

• Computer Signal