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Exploring Computers and Their UsesExploring Computers and Their Uses

Lecture 02: Roadmap

Computers for Organizations Network Servers Mainframe Computers Minicomputers Supercomputers

Computers in Society

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Computers For Organizations

Network servers Centralized computer All other computers

connect Provides access to

network resources Multiple servers are

called server farms Often simply a powerful

desktop

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Computers For Organizations

Minicomputers Called midrange computers Power between mainframe a

and desktop Handle hundreds of users Used in smaller organizations Users access through a terminal

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Computers For Organizations

Mainframes Used in large

organizations Handle hundreds or

thousands of users

Store tremendous amount of data.

Users access through a terminal

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Computers For Organizations

Supercomputers The most fastest, expensive and powerful computers Can execute 100 trillion instructions in single sec. Weight is 100 tons. Store 20,000 times more data than desktop. Handle large and complex calculations Process trillions of operations per second Found in research organizations, Nuclear energy

research.

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Cont.

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Computers In Society

More impact than any other invention Changed work and leisure activities Used by all demographic groups

Computers are important because: Provide information to users Information is critical to our society Managing information is difficult

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Computer in Society

Computers at home Many homes have multiple

computers Most American homes have

Internet Computers are used for

Business Budgeting and financial mangment Entertainment Communication Education

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Computers In Society

Computers in education Computer literacy required at all levels

Computers in small business Makes businesses more profitable Allows owners to manage

Computers in industry Computers are used to design products Computer aided Manufacturing(CAM)

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Computers In Society

Computers for Mobile Users Computers for power users Computers for large business users. Computers for traveling Computers for publishing Computers in Finance

Example Online Banking

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Computers In Society

Computers in government Necessary to track data for

population Police officers Tax calculation and collection

Governments were the first computer users

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Computers In Society

Computers in health care Revolutionized health care New treatments possible Scheduling of patients has

improved Delivery of medicine is

safer

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