A: Hey, Bill, Can you tell what's wrong with my computer?

　　I can't move the mouse, I can's user the keyboard, Nothing is working right.

B: Hmm, It like your hard drive crashed.

A: That sounds bad.

B: Well ,if you don't save your work, you might lose the most recent changes you've made.but it shouldn't be too bad.

　　You just need to restart your computer.

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A: Oh, no! I can't remember where I saved my file, and there are too many directories on my hard drive.

　　I will never find it.

B: Do you remember the name of the file?

A: I named it Term Paper.

B: Just click on the Start button at the left bottom of your screen.

　　Then you will see an item called Find.

　　Click on that and type in the name of your document.

　　The computer will help you find it no time!

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A: What's the best kind of printer to buy?

B: That depends on what you want to print.

A: I guess that makes sense.

　　I mostly print word ducument and some Power Point files.

B: In that case,I would suggest a color bubble-jet printer.

　　They are usually pretty cheap and compact, but they produce sufficient graphic quality to print Power Point files.

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A: I've decided to buy a CD Writer.

B: What are you going to do with that?

A: I enjoy photography, and I've decided to start storing my pictures on CD-ROM.

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Software is the term used to describe the instructions that tell the hardware how to perform a task.without software instructions, the hardware doesn't know what to do.

The purpose of a computer system ,is to convert data into information.

Data is raw,unevaluated facts and figures, concepts and instructions.

This raw, material is processed into useful information.

In other words, information is the product of data processing.

This processing includes refining, summarizing categorizing,and otherwise manipulating the data into a useful form for decision making.

For example, the facts and figures contained in a stack of customer orders waiting to be entered into a computer-based order entry system are data.

after the data is entered and processed, and output report about how that data affected prduct inventory would be information.