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Interpretation vs Compilation

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  What is Interpreter? This language processor converts a HLL(High Level Language) program into machine language by converting and executing it line by line. If there is any error in any line, it reports it at the same time and program execution cannot resume until the error is rectified. Interpreter must always be present in the memory every time the program is executed as every time the program is run, it is first interpreted and then executed. For error debugging, interpreter is very much useful as it reports the error(s) at the same time. But once errors are removed, unnecessary usage of memory takes place as it has to be present in the memory always.   What is Compiler? It also converts the HLL program into machine language but the conversion manner is different. It converts the entire HLL program in one go, and reports all the errors of the program along with the line numbers. After all the errors are removed, the program is recompiled, and after that the compiler is not...
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Data Representation in Computer - ProLearner

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     Data Representation in Computer INTRODUCTION Digital techniques have found their way into innumerable areas of tech- nology, but the area of automatic digital computers is by far the most notable and most extensive. As you know, a computer is a system of hardware that performs arithmetic operations, manipulates data, and makes decisions. In science, technology, business, and, in fact, most other fields of endeavor, we are constantly dealing with quantities; so are computers. Quantities are measured, monitored, recorded, manipulated arithmetically, observed, or in some other way utilized in most physical systems. In digital systems like computers, the quantities are represented by symbols called digits. Many number systems are in use in digital technology that represent the digits in various forms. The most common are the decimal, binary, octal, and hexadecimal systems. This chapter discusses these number systems and the physical representation of digit...
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