start()

loop()

setup()

main()

HTML

Ruby

C/C++

Java

Start → End

Connect → Disconnect → Connect

Init → Stop → Reboot

setup() once, then loop() forever

Because the code cannot run without Internet

Because devices always stay connected to the power grid

Because it makes the screen brighter

Because many devices run on batteries and must last months or years

To avoid any automation

To reduce unplanned downtime and improve efficiency

To increase unplanned downtime

To remove all sensors from factories

DC motor that opens a valve

Humidity sensor

Light sensor (LDR)

Temperature sensor

Monitor health metrics continuously and detect problems early

Improve sleep only

Play video games

Replace all traditional medicine

A way to store documents in the cloud

A network of physical objects with sensors and connectivity that exchange data

A system where only computers can access the internet

A social network for people to chat online

More water consumption

No need to monitor fields anymore

20–30% higher yields with better resource usage

Lower crop yield