Embedded Systems

An embedded system is ......

• A computer that performs only one task

• A small computer that is built into a bigger system

• A small computer, built into a larger system, that performs a dedicated task

• A computer that responds to its environment

Most embedded systems act in real time.

• True

• False

A microcontroller is an integral part of an embedded system. A microcontroller contains ....

• CPU, memory, actuators, sensors

• CPU and memory

• CPU and a power source

A sensor ....

• holds the program instructions in the microcontroller

• supplies information from the outside world to the microprocessor

• converts output instructions into mechanical actions

• provides power to the microcontroller

A actuator ....

• holds the program instructions in the microcontroller

• supplies information from the outside world to the microprocessor

• converts output instructions into mechanical actions

• provides power to the microcontroller

Which of these is not a feature of an embedded system

• Low power consumption

• single purpose

• high maintenance

• responsive to their environment

• usually operates in real time

What makes an embedded system part of the IoT?

• using intelligent storage

• operating in real time

• connection to the Internet

• having a minimal or no user interface

Which of these devices is not part of the IoT?

• a drinks dispenser that sends a reorder request to the supplier

• windscreen wipers that respond to water on the windscreen

• pacemaker that keeps a heart beating at a normal rate

• A door bell with a camera

Which of these is not a concern about IoT devices?

• use of a default password which potentially makes access easy for hackers

• privacy concerns around the huge amount of personal data collected

• security issues around updating software in the embedded system

• concerns around the embedded system making incorrect decisions