Conjunction in compound sentence

Words AND

AND logic. This gate has two input state. Each state has a binary value, which represents a logic value, ie TRUE and FALSE. The key to this gate is, its output will be TRUE) if the input is TRUE.
His examples:
A boy and his friends were walking towards the market that maybe they want to shop.

word OR

OR logic gates. This gate has two input state. Each state has a binary value, which represents a logic value, ie TRUE and FALSE. The key to this gate is, the output will be TRUE if at least one input is TRUE.
His examples:

In the event of his television iti participants are given a choice of forward or backward in order to continue to act

BUT word

used as a denial or rebuttal said.

For example:

he's a pretty boy but he's a lazy child, should he be turned into a child who is more diligent.