Slide 2: In fact, the computer is rapidly becoming, if it hasn't already gotten there, as tightly woven into the fabric of our lives as the automobile. The analogy runs quite deep. When automobiles were new, many people said "Those smelly, loud, complicated things will never replace the horse!" And "Those things break down in just a few miles, while my faithful horse goes on and on and repairs itself!"
Slide 3: Nowadays it's hard to imagine the world without all the variety of four-wheeled, internal combustion vehicles. How many can you name? Sedans, pickup trucks, fire engines, front-end loaders, 4-wheelers, golf carts, bulldozers, cranes, vans, dump trucks... We have an "automobile" for every purpose under heaven - and in different models and colors, too.
Slide 4: So it is with computers. There are different kinds of computers for different purposes. They are just as varied in size, expense, and ability as our more familiar 4-wheeled vehicles are.
What is a computer? : A computer is an electronic device capable of accepting and manipulating data to give meaningful results. What is a computer ?
A computer has four functions: : a. accepts data Input b. processes data Processing c. produces output Output d. stores results Storage A computer has four functions:
important terminologies: 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, 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 don't change anything. important terminologies