英语翻译General Features of Operating SystemsAnoperating system

英语翻译
General Features of Operating Systems
Anoperating system is a master control program which controls the functions ofthe computer system as a whole and the running of application programs.Allcomputers do not use the same operating systems.It is therefore important toassess the operating systems used on a particular model before initialcommitment because some software is only designed to run under the control ofspecific operating systems.Some operating systems are adopted as “industry standards” and these are the oneswhich should be evaluated because they normally have a good software base.Thereason for this is that software houses are willing to expand resources on thedevelopment of application packages for machines functioning under the controlof an operating system which is widely used the cost of software is likely tobe lower in such circums tances as the development costs are spread over agreater number of users,both actual and potential.
Mainframecomputers usually process several application programs concurrently,switchingfrom one to the other,for the purpose of increasing processing productivity.This is known as multiprogramming(multi-tasking in the context ofmicrocomputers),which requires a powerful operating system incorporation workscheduling facilities to control the switching between programs.This entailsreading in data for one program while the processor is perfecting computationson another and printing our results on net another.
In multi-user environment an operating system isrequired to control terminal operations on a shared access basis as only oneuser can access the system at and moment of time.Such systems also require asystem for record locking and unlocking,to prevent one user attempting to reada record while another user is updating it ,for instance.The first user isallocated control to write to a record (or file in some instances) and otherusers are denied access until the record is updated and unlocked.

操作系统的一般特性
一个操作系统总的来说是一个控制电脑系统功效的主控制项目并且运行应用程序.全部的电脑不会使用同一个操作系统.因此在最初的承诺之前使用一个特别的模型去连接操作系统非常重要,因为一些软件仅仅是被设计出用来在具体操作系统下控制才能启动.一些操作系统被采纳作为“工业标准” 并且这些系统应该被评估因为他们正常的来说有一个很好的软件基础.thereason?therefore因此软件服务站很愿意为机械的运作在应用附带的打包发展下扩展资源,这个被广泛使用而它的环绕下的软件成本会降低.环境作为发展成本常常遍布于许多的事实上的以及潜在的使用者.
电脑的主要框架常常同时地处理几个的应用程序,一个转换为另外一个,为了增加处理生产效用的目的.这个就是所谓的多元程式,要求一个强有力的操作系统编入按时间顺序工作的设备从而控制程序之间的转换.这个承担着一个程序数据的读写当处理器是完全的计算一个并且在另外一个网络打印出我们的结果.
在多元用户使用的环境下一个操作系统需要去控制最高级的操作基于一个共享的连接基础由于只有一个使用者瞬间可以进入到这个系统.比方说,这样的系统当然也要求一个系统去记录锁住或者解锁,以组织一个使用者试图去读一个记录当另外一个用户更新它的时候.
第一个的用户被分配i通知读写（ 或者某些情况的文件）并且其他的用户就不能够去进入直到那个记录被更新了和解锁了.
纯人工手打,翻译的好辛苦啊!原文有写单词是连着的,我得慢慢猜是哪个单词.怎么感觉像是IELTS 的科技文章.
再问： 虽然翻译的不是很准确 不过辛苦啦