论文部分内容阅读
引言 本文提出一些目前尚未作而需要深入理解并且需要作的事情,一些作者认为是需要作的但是作起来十分困难的事情。 概念和定义 有两种重要的抽象概念需要加以理解和阐明。 1.绝对保护和防御保护。绝对保护系统是指,不管保护域内运行的是什么程序,都能
INTRODUCTION This paper presents some things that are not yet in need of in-depth understanding and what needs to be done. Some authors think it is something that needs to be done but is very difficult to set up. There are two important abstract concepts that need to be understood and clarified. 1. Absolute protection and defense protection. Absolute protection system means that no matter what program is running in the protection domain, can