Global warming is the increase in the worlds temperature.
Electricity us

Computer device affects global warming because they generate heat while they operate. Although computers and technology help us a lot in various ways it still affects. Something you could do is disconnect the device because it still generates heat while off. Internet also consumes massive amounts of energy which generates heat.

Garbage generates landfills and landfills generate toxins that affect the environment which impacts global warming by increasing the heat. As the sun burns it releases the toxins in the trash.,

Fans as computers, don't generate as much heat. They might help you not feel as much hot but it still generates global warming.

Factories are very dangerous. They release C02 which is an effect on oxygen. It contaminates oxygen which also affects global warming. This can increase a lot the heat. If the world keeps like this it will lead to glaciers melting and natural fires.

Chargers might not seem as the enemies. When not in use they seem as they cause no harm. You should always disconnect chargers when not in use. They still increase heat because they are doing heat when they are plugged in.