Which of the following not a hardware componet 1.mouse
2.monitor
3.system unit
4.projector

Monitor is not a hardware component

monitor because you can see but not touch the inside screen

think its caste system

explanation:

well, i can't read it so i'll ask you questions about it : )

if you were a reader and you read the introduction, would you want to read more?

does it start with a question? if so, is it something you would want to read about?

and ask any friends or family for their opinion : )