some knowlege about CO

1.reason to study computer organisation:

performance

security

softerware change

2.translation and interpretation

 code is tansformed into another formant

program simulates a lower level

3.examples of abstraction

an abstraction is a representation or a model

4.contemporary nultilevel machines

level5 prblem-orlented language level
level4 assembly language level1
level3 operating system machine level
level2 instruction set architecture level
levle1 microarchitecture level
level0 digital logic level
5.lower levels are usually interpreted

higher levels are most frequently translated

languages of levels 1 to 3 are numeric

levels 4and 5 are based on languages that contain words.

6.有哪几种操作系统

android ios .windows.linux.

未完待续。。。


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