pi codes是什么意思 pi codes在线中文翻译

The codes used when two or more programs are in the same program tape. These codes allow automatic selection of programs and permit switching from one program to the other.; 两个或多个程序在同一个程序磁带上时,用以自动选择程序,并可 从一个程序切换到另一个程序的代码。