To keep a desktop computer or a server powered up when the electricity goes off in addition to protection against power fluctuations, an <u>uninterruptible power supply (UPS)</u>, which contains a built-in battery, can be used.
<u>Explanation</u>:
An uninterruptible power supply (UPS) is a device that allows a computer or server powered up for a short time, when the electricity goes off. UPS device also provides uninterrupted service during power fluctuation.
A battery is inbuilt in the UPS and provides power for few minutes to the computer to shut down it in a proper manner.
UPS is available at affordable cost and can be maintained at low cost compared to generators.
Earlier there were no ic's but vacuum tubes or transisters,..
making computer big , so big in that time, with low speed and memory
Answer:
A merchant is a person who buys or sells goods in large quantities, especially one who imports and exports them.
Answer:
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