By Rajiv Khanna
Major positive factors of this ebook are: precisely as in keeping with syllabus, steered by means of the board; comprises answer for lab assignments and viva query financial institution; really easy language used for studying; American English development during the publication; a question financial institution, titled 'Exercises' were inserted on the finish of every bankruptcy; functional directions within the type of step-by-step directions on the finish of every bankruptcy; and, plenty of examples and figures were integrated in every one bankruptcy. This booklet will function an ideal instructing consultant for the academics and a superb reference booklet for the scholars.
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Additional resources for Basics of Computer Science (T.N. Diploma)
On the other hand, if any item present in memory is no more required then memory is reclaimed and free space is created. All these functions are memory management functions and are performed by operating system. Information Management Functions Permanent storage of information within computer is an essential requirement of any computer environment. For this, data / information is written on the secondary storage devices, in well systematic way. In this process, all arrangements are made to ensure that Chapter 3 – Operating System 41 new data / information being written on the device doesn't overwrite previously written data / information and afterwards it is easily retrievable in its, original form.
11 32 Basics Of Computer Science Magnetic Cartridge Tape Drive Like magnetic tape drive, magnetic cartridge tape drive is also an Input/Output unit, which records the data on tape. Cartridge tape drives are much smaller in size than magnetic tape drives. They do not store the data on spool tapes. They store it on cartridge tapes. Cartridge tape resembles small video tape that is used in handy cams. 12. 1 and note that three units viz. Memory, ALU and Control Unit put together are referred to as Central Processing Unit or CPU in short.
They get erased when computer is switched off. If you need them again, process has to be repeated. e. input unit and output unit as well. They retain the data/result permanently. Whenever required, the data, instructions or results can be written on them. Later, as and when required, they can be read from there. All such units, which provide means for storing the data, instructions or results permanently, are called input/output units. Following types of Input/Output units are commonly used in computer.