How does a computer work?
A: Mark ,your computer has just turned off all by itself!
B:Actually ,it just went into energy saver mode.
A:Energy saver mode, what's that?
B:If the processor hasn't received any input for a certain period of time ,it turns off the monitor.
All you have to do to turn it on again is move the mouse or hit a key on the deyboard.
A: So, you've decided to get a laptop computer?
B: That's right, It's more expensive and harder to fix,but I'm on the road so much.
I have to have something I can take with me.
A: Did you get your new laptop yet?
B: No, I've done some shopping ,but it's hard to decide .
B: Well, I've found one that I like quite a bit, It has 15-inch screen with good resolution.
but it doesn't have a built-in-CD-ROM.
The other has both a floppy drive and CD-ROM built-in.
but the screen is small and it's just too heavy.
A: I guess you can't have the best of both worlds.
B: I guess not.
A: I like storing my pictures on disc because it gives me lots of options.
B: What sort of options does it give you?
A: Well, first of all, it provides a safe, compact place to store them.
Second,I can do lots of fun things with them with the image-editing software I have.
B: Is there anything else?
A: Well, if I want to, I can print them out later.
or I can also use the computer to present them as a slide show for my friends.