Unformatted text preview: 7) We study HLLs mainly to make them easier and cheaper to design and faster to execute than machine languages . (faster !?) 8) Every HLL represents a virtual machine, i.e., programmers think that the machine directly understands the used HLL as its own machine language. Sure! Any programmer thinks that the machine (hardware) understands his/her language coding (e.g., Java , C, FORTRAN, ASSEMBLY, . ..). 9) The operating system interfaces between the HLLs and the core system, abstracting (i.e., masking) the complex hardware details to the user. (See the System Layers Figures in the first Lecture) 10) In the programming language design field, it is always the case that when you gain in one (or more) of the following direction(s): abstraction , power , readability , modularity , speed of execution , and language security you would lose in one (or more) direction(s). (No Free Lunch!)...
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- Spring '11
- virtual machine, machine language, abstract data types, High level languages, core hardware language