命令的特点，绝对命令经济的特点

1，绝对命令经济的特点

绝对命令经济的特点 1,政府决定生产什么,如何生产,为谁生产; 2,有一强大的中央政府; 3,缺乏市场

绝对命令经济的特点

2，指令命令程序软件的概念区别联系

指令指CPU可执行的语句，一般CPU逐条线性执行送给它的指令，这些指令一般是用汇编语言编写，然后翻译为CPU可执行的二进制格式。命令一般指命令行程序，例如微软的cmd命令行控制台，命令可以快速的执行一项复杂操作，很多脚本程序就是基于命令模式来快速执行。程序是指使用某一编程语言写出的代码。软件是指在某个平台上可运行的程序，比如PC上的word，手机里的app，这些虽然面向不同设备和操作系统，但都是软件的范畴。软件是由一段一段的程序组成的，而程序的最终执行都要先翻译成二进制格式的指令。命令行程序其实也是一个软件，其也是由很多个程序组成而完成很多复杂操作。

指令：告诉计算机从事某一特殊运算的代码。如：数据传送指令、算术运算指令、位运算指令、程序流程控制指令、串操作指令、处理器控制指令。程序：是指为了得到某种结果而可以由计算机等具有信息处理能力的装置执行的代码化指令序列，或者可以被自动转换成代码化指令序列的符号化指令序列或者符号化语句序列。软件：是一系列按照特定顺序组织的计算机数据和指令的集合。一般来讲软件被划分为系统软件、应用软件和介于这两者之间的中间件。软件并不只是包括可以在计算机（这里的计算机是指广义的计算机）上运行的电脑程序，与这些电脑程序相关的文档一般也被认为是软件的一部分。简单的说软件就是程序加文档的集合体。可以这样理解：软件包含程序，程序包含指令。

指令命令程序软件的概念区别联系

3，计算机指令有哪些字段各有什么特点

(1)算术运算指令计算机指令系统一般都设有二进制数加\减\比较和求补等最基本的指令,此外还设置了乘\除法运算指令\浮点运算指令以有十进制动算指令等. (2)逻辑运算指令一般计算机都具有与\或\非(求反)\异或(按位加)和测试等逻辑运算指令. (3)数据传送指令. 这是一种常用的指令,用以实现寄存器与寄存器,寄存器与存储单元以及存储器单元与存储器单元之间的数据传送,对于存储器来说,数据传送包括对数据的读(相当于取数指令)和写(相当于存数指令)操作. (4)移位操作指令移位操作指令分为算术移位\逻辑移位和循环移位三种,可以实现对操作数左移或右移一位或若干位. (5)堆栈及堆栈操作指令. 堆栈是由若干个连续存储单元组成的先进后出(FILO)存储区,第一个送入堆栈中的数据存放在栈底,最后送入堆栈中的数据存放在栈顶.栈底是固定不变的,而栈顶却是随着数据的入栈和出栈在不断变化. (6)字符串处理指令. 字符串处理指令就是一种非数值处理指令,一般包括字符串传送,字符串转换(把一种编码的字符串转换成另一种编码的字符串),字符串比较,字符串查找(查找字符串中某一子串),字符串匹配,字符串的抽取(提取某一子串)和替换(把某一字符串用另一字符串替换)等. (7)输入输出(I/O)指令. 计算机本身公是数据处理和管理机构,不能产生原始数把,也不能长期保存数据.所处理的一切原始数据均来自输入设备,所得的处理结果必须通过外总设备输出. (8)其它指令. 特权指令----具有特殊权限的指令,在多服务用户\多任务的计算机系统中,特权指令是不可少的. 陷阱与陷阱指令---陷阱实际上是一种意外事故中断,中断的目的不是为请求CPU的正常处理,面是为了通知CPU所出现的故障,并根据故障情况,转入相就的故障处理程序. 转移指令---用来控制程序的执行方向,实现程序的分支. 子程序调用指令---在骗写程序过程中,常常需要编写一些经常使用的\能够独立完成的某一特定功能的程序段,在需要时能随时调用,而不必重复编写,以便节省存储空间和简化程序设计.

这需要看在什么情况下,如果在dos情况下,那就可以查dos命令了,如果在unlx情况下,那就应该学习unix操作系统了.

计算机指令有哪些字段各有什么特点

4，新编财经写作命令的最大特点是具有什么性

答：命令的最大特点是具有指挥性和强制性。

1．表示原因 1）there are three reasons for this． 2）the reasons for this are as follows． 3）the reason for this is obvious． 4）the reason for this is not far to seek． 5）the reason for this is that．．． 6）we have good reason to believe that．．．例如： there are three reasons for the changes that have taken place in our life．firstly，peoples living standard has been greatly improved．secondly，most people are well paid， and they can afford what they need or like．last but not least，more and more people prefer to enjoy modern life．注：如考生写第一个句子没有把握，可将其改写成两个句子。如：great changes have taken place in our life． there are three reasons for this．这样写可以避免套用中的表达失误。 2．表示好处 1）it has the following advantages． 2）it does us a lot of good． 3）it benefits us quite a lot． 4）it is beneficial to us． 5）it is of great benefit to us．例如： books are like friends．they can help us know the world better，and they can open our minds and widen our horizons．therefore，reading extensively is of great benefit to us． 3．表示坏处 1）it has more disadvantages than advantages． 2）it does us much harm． 3）it is harmful to us．例如： however，everything divides into two．television can also be harmful to us．it can do harm to our health and make us lazy if we spend too much time watching television． 4．表示重要、必要、困难、方便、可能 1）it is important（necessary，difficult，convenient， possible）for sb．to do sth． 2）we think it necessary to do sth． 3）it plays an important role in our life．例如： computers are now being used everywhere，whether in the government，in schools or in business．soon， computers will be found in every home，too．we have good reason to say that computers are playing an increasingly important role in our life and we have stepped into the computer age． 5．表示措施 1）we should take some effective measures． 2）we should try our best to overcome（conquer）the difficulties． 3）we should do our utmost in doing sth． 4）we should solve the problems that we are confronted（faced）with．例如： the housing problem that we are confronted with is becoming more and more serious．therefore，we must take some effective measures to solve it． 6．表示变化 1）some changes have taken place in the past five years． 2）a great change will certainly be produced in the worlds communications． 3）the computer has brought about many changes in education．例如： some changes have taken place in peoples diet in the past five years．the major reasons for these changes are not far to seek．nowadays，more and more people are switching from grain to meat for protein，and from fruit and vegetable to milk for vitamins． 7．表示事实、现状 1）we cannot ignore the fact that．．． 2）no one can deny the fact that．．． 3）there is no denying the fact that．．． 4）this is a phenomenon that many people are interested in． 5）however，thats not the case．例如： we cannot ignore the fact that industrialization brings with it the problems of pollution．to solve these problems， we can start by educating the public about the hazards of pollution．the government on its part should also design stricter laws to promote a cleaner environment． 8．表示比较 1）compared with a，b．．． 2）i prefer to read rather than watch tv． 3）there is a striking contrast between them．例如： compared with cars，bicycles have several advantages besides being affordable．firstly，they do not consume natural resources of petroleum．secondly，they do not cause the pollution problem．last but not least，they contribute to peoples health by giving them due physical exercise． 9．表示数量 1）it has increased（decreased）from．．．to．．． 2）the population in this city has now increased （decreased）to 800，000． 3）the output of july in this factory increased by 15％ compared with that of january．例如： with the improvement of the living standard，the proportion of peoples income spent on food has decreased while that spent on education has increased．再如： from the graph listed above，it can be seen that student use of computers has increased from an average of less than two hours per week in 1990 to 20 hours in 2000． 10．表示看法 1）people have（take，adopt，assume）different attitudes towards sth． 2）people have different opinions on this problem． 3）people take different views of（on）the question． 4）some people believe that．．．others argue that．．．例如： people have different attitudes towards failure．some believe that failure leads to success． every failure they experience translates into a greater chance of success at their renewed endeavor．however， others are easily discouraged by failures and put themselves into the category of losers．再如： do “lucky numberseally bring good luck？different people have different views on it．注：一个段落有时很适宜以问句开始，考生应掌握这一写作方法。 11．表示结论 1）in short，it can be said that ．．． 2）it may be briefly summed up as follows． 3）from what has been mentioned above，we can come to the conclusion that ．．．例如： from what has been mentioned above，we can come to the conclusion that examination is necessary，however， its method should be improved．注：例句1可用于任何一个段落的结论句；例句3则多用文章结论段的第一句。 12．套语 1）its well known to us that ．．． 2）as is known to us，．．． 3）this is a topic that is being widely talked about． 4）from the graph（table，chart）listed above，it can be seen that ．．． 5）as a proverb says，“where there is a will，there is a way．例如： as is well known to us，it is important for the students to know the world outside campus． the reason for this is obvious．nowadays，the society is changing and developing rapidly，and the campus is no longer an “ivory toweras college students，we must get in touch with the world outside the campus．only in this way can we adapt ourselves to the society quickly after we graduate．再如： does it pay to be honest？this is a topic that is being widely talked about and different people have different opinions on it．