> Computers are originally designed only for English alphabet in mind.
Computers are originally designed for no alphabet at all. They only have two symbols.
ASCII is a set of operating codes that includes instructions to physically move different parts of a mechanical typewriter. It was already a mistake when it was used for computer displays.
Note that ASCII stands for "American Standard Code for Information Interchange". There's no expectation here that this is a suitable code for any language other than English, the de-facto language of the United States of America.
Does the situation change in Unicode?