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1、计算机系统结构（Computer system structure）1, in what sense is the software and hardware equivalent? In what sense is not equivalent? Logically equivalent, performance, price, ease of implementation is not the same. ?2, why will the computer system as a hierarchical structure of multi machine made? can adjus
2、t the software and hardware proportion; can use the real real physical machine instead of virtual machine; in 1 the host computer simulation of another. ?3. Explain the differences and connections between translation and interpretation. Difference: translation is the whole program conversion, interp
3、retation is a series of low-level machine statements, simulation of a high-level machine statement. Contact: both are necessary steps for advanced machine programs to execute on lower level machines. ?4, general machine for the current computer system structure attributes include those? data represe
4、ntation, addressing mode, register organization, instruction system, storage system, interrupt system, tube state state definition and conversion, IO mesh structure, protection methods and mechanism. ?5. Examples are given to illustrate the structure of the computer system, the composition of the co
5、mputer and the relationship and influence of the computer implementation. The same structure can be used in different components. For example, the machines of different models in the series are the same, but the high-end machines often adopt overlapping pipelining. The composition is the same and th
6、e implementation is different. For example, main memory can be bipolar, and MOS type can also be used. Advances in structure, composition, and composition contribute to structural progress, such as micro program control. The design of the structure should be combined with the application and possibl
7、e adoption of the composition. The composition is determined by the structure, and the following is limited to the implementation. The tradeoff between composition and implementation depends on cost performance, etc. the structure, composition, and content of the implementation vary from time to tim
8、e. ?6. Briefly describe the structure of the computer system, realize the advantages and disadvantages of each other by software and hardware. The advantages of the hardware are: high speed and save storage time; disadvantages: high cost, low utilization rate, reduce flexibility and applicability. S
9、oftware advantages: low cost, improve flexibility and applicability; shortcomings: slow, increase storage time, software design fees. ?7, try to explain the design ideas from top to bottom, from the bottom to top design ideas and their existing problems, from top to bottom: first consider the applic
10、ation requirements, and then step by step down to consider how to achieve. Suitable for professional machines, from top to bottom: according to existing devices, step by step up. Design idea of universal machine in 60s and 70s. The problem of the above methods is that the software and hardware are o
11、ut of line. ?8. Discuss the design ideas and advantages from the middle. Consider both the application and the existing devices. The software and hardware boundaries are designed for both ends. Advantages: concurrent design, shortened cycle.9, ask what to do software transplantation, the relative co
12、st of software is getting higher and higher, we should redistribute the function of software and hardware. But mature software can not give up; it is difficult to modify existing software; redesign software is uneconomical.10. A brief introduction to the use of a unified high-level language, the app
13、licable circumstances, the existing problems, and the strategies that should be adopted. Definition: a fully generic high-level language for all programmers. Application: software is easy to transplant. Problems: the different language syntax and semantic structure; peoples different views; the same
14、 language is not universal in different machines; programmers used strategies: can be unified within the assembly language, the same structure between machines in machine series. ?11. Briefly introduce the serial method, the applicable situation, the advantages, the existing problems and the strateg
15、ies that should be adopted. The definition is: design software and different grades of machines according to the serial structure of the hardware and software interface. Applicable occasions: the same series of software compatible benefits: echoing the middle start design ideas; to ease the software
16、 requirements, stable environment and rapid development of hardware contradictions. Problems: software compatibility sometimes impedes changes in system architecture. Strategy: adhere to this approach, but at a certain time to develop a new series, but also the use of analog simulation. ?12, using simulation method, applicability, advantages, problems and strategies should be taken.? explain another definition: Simulation of instruction system a
