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COMPUTER SYSTEM (Computer (Computer is an electronic device that can
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COMPUTER SYSTEM
Computer
Computer is an electronic device that can
accept data, process the data, produce results,
and store results for future use.
Function of Computer
• Computers process data into information.
– Data is a collection of unprocessed text, numbers,
images, audio, and video.
– Information is data that is organized, meaningful,
and useful.
Components of a Computer
• A computer uses hardware and software to
process data into information.
– Hardware is the electric, electronic, and
mechanical equipment that makes up a computer.
– Software is a series of instructions that tells
hardware how to perform tasks.
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Storage Capacity
• Storage capacity refers to a number of bytes a
storage medium can hold.
• Represented in units such as:
– KB (Kilobyte)
– MB (Megabyte)
– GB (Gigabyte)
– TB (Terabyte)
– PB (Petabyte)
Storage Capacity
• 1 KB = 1024 bytes (210 bytes)
• 1 MB = 1024 KB (220 bytes)
• 1 GB = 1024 MB (230 bytes)
• 1 TB = 1024 GB (240 bytes)
• 1 PB = 1024 TB (250 bytes)
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