DCSA QUESTION AND ANSWER

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DCSA--Computer Programming :

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Topics  :     Decision Making and Looping  : Question and answer :  Category : LOOP :  # What do you mean by looping ? Describe two different forms of looping . Ans : A loop is a sequence of instructions that is continually repeated until a certain condition is reached. Two forms are ; 1. Entry-controlled loop . 2. Exit-Controlled loop . Entry-Controlled loop : The control conditions are tested before the  start of the loop execution.                                     If the conditions are not satisfied, then the body of the loop will not be executed. Exit-Controlled loop :  The control conditions are tested at the end of the body of the loop .                                     As  result the body is executed unconditionally for the first tim...
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DCSA~Office Automation--1302

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Previous question: What do you understand by COM? Describe it briefly.    Answer : The COM recorder thus becomes an alternate to paper printer as a way of      producing output. Film may be in the form of roll or microfiche. It is a recent equipment named computer output microfilm (COM). A computer output microfilm equipment integrates computer and microfilm technologies. A document is read (or keyed) into the computer and a microfilm recorder receives the output information either directly from the computer (on-line mode) or through a tape drive (off-line mode). The recorder displays the information as characters on a screen. A high speed camera takes a picture of the displayed information. The film is processed either in the recorder itself or in a separate automatic film developer. Although the initial cost of such equipment is very high, the cost of film is relatively cheaper and the system provides relatively fast output. A single COM recorder can p...
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