in off line spooling user has no interface with systems it strongly used in Batch system's.it mean's that you submit your request to system , system will cmputing and print result of request without interface with user.
advantage of spooling
Spooling
Any turbo-charger that spins pressurised air into the cylinder makes a high pitched spooling sound is called a spooling turbo charger.
Spooling is a physical method used to isolate DNA from blood. After lysing the blood cells, genomic DNA is wound around a glass rod (spooling) that is then transferred to a fresh solution for further processing. This technique allows for DNA purification without the need for harmful chemicals or enzymes.
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Working with and rolling using a brace.
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All computers today have spooling services. If it did not you would not be able to print to more than one printer.
Spooling is putting jobs in a buffer area, whether in memory or on disk, where they can be accessed when a device is ready. For example, print jobs are spooled to a buffer to be printed when the printer is ready.
Not necessarily. It depends on what you are processing.