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1，絕對命令經濟的特點

絕對命令經濟的特點 1,政府決定生產什么,如何生產,為誰生產; 2,有一強大的中央政府; 3,缺乏市場

絕對命令經濟的特點

2，指令命令程序軟件的概念區別聯系

指令指CPU可執行的語句，一般CPU逐條線性執行送給它的指令，這些指令一般是用匯編語言編寫，然后翻譯為CPU可執行的二進制格式。命令一般指命令行程序，例如微軟的cmd命令行控制臺，命令可以快速的執行一項復雜操作，很多腳本程序就是基于命令模式來快速執行。程序是指使用某一編程語言寫出的代碼。軟件是指在某個平臺上可運行的程序，比如PC上的word，手機里的app，這些雖然面向不同設備和操作系統，但都是軟件的范疇。軟件是由一段一段的程序組成的，而程序的最終執行都要先翻譯成二進制格式的指令。命令行程序其實也是一個軟件，其也是由很多個程序組成而完成很多復雜操作。

指令：告訴計算機從事某一特殊運算的代碼。如：數據傳送指令、算術運算指令、位運算指令、程序流程控制指令、串操作指令、處理器控制指令。程序：是指為了得到某種結果而可以由計算機等具有信息處理能力的裝置執行的代碼化指令序列，或者可以被自動轉換成代碼化指令序列的符號化指令序列或者符號化語句序列。軟件：是一系列按照特定順序組織的計算機數據和指令的集合。一般來講軟件被劃分為系統軟件、應用軟件和介于這兩者之間的中間件。軟件并不只是包括可以在計算機（這里的計算機是指廣義的計算機）上運行的電腦程序，與這些電腦程序相關的文檔一般也被認為是軟件的一部分。簡單的說軟件就是程序加文檔的集合體。可以這樣理解：軟件包含程序，程序包含指令。

指令命令程序軟件的概念區別聯系

3，計算機指令有哪些字段各有什么特點

(1)算術運算指令計算機指令系統一般都設有二進制數加\減\比較和求補等最基本的指令,此外還設置了乘\除法運算指令\浮點運算指令以有十進制動算指令等. (2)邏輯運算指令一般計算機都具有與\或\非(求反)\異或(按位加)和測試等邏輯運算指令. (3)數據傳送指令. 這是一種常用的指令,用以實現寄存器與寄存器,寄存器與存儲單元以及存儲器單元與存儲器單元之間的數據傳送,對于存儲器來說,數據傳送包括對數據的讀(相當于取數指令)和寫(相當于存數指令)操作. (4)移位操作指令移位操作指令分為算術移位\邏輯移位和循環移位三種,可以實現對操作數左移或右移一位或若干位. (5)堆棧及堆棧操作指令. 堆棧是由若干個連續存儲單元組成的先進后出(FILO)存儲區,第一個送入堆棧中的數據存放在棧底,最后送入堆棧中的數據存放在棧頂.棧底是固定不變的,而棧頂卻是隨著數據的入棧和出棧在不斷變化. (6)字符串處理指令. 字符串處理指令就是一種非數值處理指令,一般包括字符串傳送,字符串轉換(把一種編碼的字符串轉換成另一種編碼的字符串),字符串比較,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)和替換(把某一字符串用另一字符串替換)等. (7)輸入輸出(I/O)指令. 計算機本身公是數據處理和管理機構,不能產生原始數把,也不能長期保存數據.所處理的一切原始數據均來自輸入設備,所得的處理結果必須通過外總設備輸出. (8)其它指令. 特權指令----具有特殊權限的指令,在多服務用戶\多任務的計算機系統中,特權指令是不可少的. 陷阱與陷阱指令---陷阱實際上是一種意外事故中斷,中斷的目的不是為請求CPU的正常處理,面是為了通知CPU所出現的故障,并根據故障情況,轉入相就的故障處理程序. 轉移指令---用來控制程序的執行方向,實現程序的分支. 子程序調用指令---在騙寫程序過程中,常常需要編寫一些經常使用的\能夠獨立完成的某一特定功能的程序段,在需要時能隨時調用,而不必重復編寫,以便節省存儲空間和簡化程序設計.

這需要看在什么情況下,如果在dos情況下,那就可以查dos命令了,如果在unlx情況下,那就應該學習unix操作系統了.

計算機指令有哪些字段各有什么特點

4，新編財經寫作命令的最大特點是具有什么性

答：命令的最大特點是具有指揮性和強制性。

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：如考生寫第一個句子沒有把握，可將其改寫成兩個句子。如：great changes have taken place in our life． there are three reasons for this．這樣寫可以避免套用中的表達失誤。 2．表示好處 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．表示壞處 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、困難、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．表示變化 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．表示事實、現狀 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．表示比較 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．表示數量 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：一個段落有時很適宜以問句開始，考生應掌握這一寫作方法。 11．表示結論 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可用于任何一個段落的結論句；例句3則多用文章結論段的第一句。 12．套語 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．