Descriptive questions for BSC-IT

1.     Briefly explain Registers.
  
Registers in computer language is a small set of data holding places which are part of a computer processor.  A register may hold a computer instruction, a storage address or any kind of data (individual characters or such as a bit sequence).  Some instructions specify registers as part of the instruction.  For example, an instruction may specify that the contents of two defined registers be added and then placed in a specified register.  A register must be large enough to hold an instruction - for example, in a 32-bit instruction computer, a register must be 32 bits in length. In some computer designs, there are smaller registers - for example, half-registers - for shorter instructions.  Depending on the processor design and language rules, registers may be numbered or have arbitrary names.




2.     What are compiler and interpreter?

A compiler is a program that process or translate a programming language to machine language. During the execution in progress the compiler parse or analyzes the language and build a output code. so main work of a compiler is to change the language from high level programming language to low level programming. And a compiler which use to translate a low level to high level language is known as decompiler. And also make sure that the statement refer to another are referred in final script. object coed or and object module is the output of the compilation. object code is machine code that processor execute one instruction at single time. A compiler runs many operation like lexical analysis, preprocessing, parsing, semantic analysis, code generation and code optimization.

An interpreter work to read and execute the source program written in high level programming language and also data of the program. It runs the programs and return the output results of programs. it is s program that execute directly without compiling them into machine language. a interpreter do the parsing of source code and perform its directly. it convert source code into efficient intermediate representation and execute it. interpreter  execute or compile the program line-by-line and return the output results.

3.     Explain the process of installing Windows XP.

Start your PC and insert CD of window XP in the CD or DVD ROM. Then computer start booting from the disk and you get a black scree. It will ask to press any keyboard key, and press any of key. after that a blue screen appear now you need to press F6 key. It will start loading window from the disk. In between this process you get the option to manage the hard drive of your machine if you want to install any of specific drive you can select. if you want to delete the drive it can also be done from that stage. There is also option to format the any of drive data before install the fresh window. after format the window will start copying on the selected drive. about 30-40 mns. your window will be install.


More questions.             

4.   Write a note on:                                                                      
      a) Clip gallery 
      b) Mail Merge  
      c) Work book 
      d) Logical functions

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