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Professional Terms
專業(yè)術(shù)語
operating system
操作系統(tǒng)
exactly adv.
確切的，精確的
involve v.
包含，涉及
logic n.
邏輯
load v.
裝入，加載
What exactly does an operating system do? Basically ,it performs a number of supporting functions.
操作系統(tǒng)究竟是干什么的呢？從根本上講，它施行一些支持功能。
For example, suppose an application program is stored on a disk
例如，假設(shè)應(yīng)用程序存儲在磁盤上。
before the program can be executed, it must be copied into the main memory first.
它在被執(zhí)行前，必須制到主存儲器中，
because the program that controls a computer must be in the main memory.
因?yàn)榭刂朴?jì)算機(jī)的程序必須要在主存儲器中。
The process of copying a program from disk to memory involves considerable logic.
把程序從磁盤復(fù)制到主存的過程涉及重要的邏輯。
The source of a computer's logic is software.
計(jì)算機(jī)的邏輯源來自軟件。
Thus ,if the application program is to be loaded, there must be a program in the memory to control the loading process.
因此，如果要裝入應(yīng)用程序，必須在主存中有一個控制加載過程的程序。
That program is the operation system.
這個程序就屬于操作系統(tǒng)。
