OIT PLUS

This is a great app that allows you to master more knowledge.

The latest content can be updated daily.

We will continue to optimize the application and improve user experience.

Download OIT PLUS now to make your life more convenient and easier

OS Abbreviation for operating system (OS), system software that manages computer hardware and software resources and provides common services for computer programs. All computer programs (except firmware) require an operating system to run.

Available features

• User friendly environment

• Support offline access