Chapter s Operating System 5.2 Evolution of os function Jobs, programs and processes The primary function of an Os is to organize the execution of user computations in a computer system. A suitable characterization of user computations is therefore fundamental to its design. Three characterizations of user computations have been used to date--jobs, programs and p rocesses。 作业、程序和进程 操作系统的基本功能是在计算机系统中组织用户计算的执行。因此它在设 计中要求对用户计算有恰当的特征描述。通常在用户计算中使用以下三种 特征记述—作业、程序和进程 《什第机专出美语 5-30Chapter 5 Operating System 计算机专业英语 5-30 Jobs, programs and processes The primary function of an OS is to organize the execution of user computations in a computer system. A suitable characterization of user computations is therefore fundamental to its design. Three characterizations of user computations have been used to date--jobs, programs and processes. 作业、程序和进程 操作系统的基本功能是在计算机系统中组织用户计算的执行。因此它在设 计中要求对用户计算有恰当的特征描述。通常在用户计算中使用以下三种 特征记述——作业、程序和进程。 5.2 Evolution of OS Function