Magnetic tapes and magnetic disk, Basic Computer Science

Magnetic tapes and Magnetic Disk:

Magnetic tapes are very commonly used for storing large quantum of data for which rapid access is not necessary; specially for archival data backups etc. Tapes are cheap means of storing data but access is generally slow. Small cassette tapes, of relatively low capacity are used with microcomputers. 

Magnetic Disks are most widely used form of backing storage, suitable for holding information required rapidly for example, data for a running program. In the type of disk drive in larger computer systems, data is recorded on the flat surfaces of a stack of circular disks revolving on a common spindle, with one read/write head for each disk. Access times, typically 0.01  seconds, although much faster than tape, are rather slow, by comparison with other computer operations, and disk access times are one of the main limiting factors in the speed of operation of retrieval systems with information stored on disk. 

Disk capacities have increased greatly, from original values of about 10 MB (Mega Bytes to present units with 1 GB (Gigabytes which is one thousand million bytes). Smaller computer systems use Winchester disks, with a single hard disk in a sealed unit, floppy disks, which are compact, cheap and convenient for transfer of programs and data. They are limited in storage capacity, with relatively slow access times, and less convenient than a hard disk in day to day use. Floppy disks now are available in two sizes, 5.25 and 3.5 inches., 

Posted Date: 10/24/2012 4:13:41 AM | Location : United States







Related Discussions:- Magnetic tapes and magnetic disk, Assignment Help, Ask Question on Magnetic tapes and magnetic disk, Get Answer, Expert's Help, Magnetic tapes and magnetic disk Discussions

Write discussion on Magnetic tapes and magnetic disk
Your posts are moderated
Related Questions
identify application software from the list? ms excel linux internet explorer adobe photshop sound card driver window disk manger adobe dream weaver windows file explorer

INTERNET Internet: The global network of computers linked by exclusive and regular phone lines and microwave and satellite signals. Extranet: An extranet is the part of

can you help me to do my assembly program homework

Create an implementation of the Ordered Associative Array API using left-leaning red-black trees. Illustrate the use of the API by refactoring your WordBench as a client of Ordered

QUESTION (a) Being just employed as junior forensic examiner at SAI computer forensic Ltd, your supervisor told you, ‘hey Moona Tambi, we have received a hard disk for examinat


READYMADE VERSUS CUSTOM-MADE SOFTWARE Nursing care software can be in two forms. Software can be custom-made with the help of a computer programmer, suited for a client with v

Open Systems Interconnection (OS1): As there are many different protocols for LANs and WANs, communication between two different systems can be difficult. The International St

What are the characteristics of algorithm?

definition of file operations