What is computer?

A Computer is an electronic device that executes the instructions in a program.



A. Accepts date          input
B. processes data       processing
C. produces output    output
D. stores result           storage           


Some Beginning terms

Hardware: The physical parts of the computer.
Software: The programs (instructions) that tell the computer what to do.
Data: Individual facts like first name, price, and quantity ordered.
Information: Data which has been massaged into a useful form, like a complete mailing address.
Default: The original settings; what will happen if you do not change anything.



What makes computer powerful?

Speed: A computer can do billions of actions per second.
Reliability: failures are usually due to human error, one way or another.
Storage : A computer can keep amounts of data.  

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