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9. System Preferences > Energy Saver

Energy Saver

The Energy Saver program helps you and your Mac in a number of ways. By blacking out the screen after a period of inactivity, it prolongs the life of your monitor. By putting the Mac to sleep half an hour after you’ve stopped using it, Energy Saver cuts down on electricity costs and pollution. On a laptop, Energy Saver extends the length of the battery charge by controlling the activity of the hard drive and screen.

Top: Here’s what Energy Saver looks like in its expanded condition on a laptop. (On a desktop machine, it’s far simpler.) In the “Put the display to sleep” option, you can specify an independent sleep time for the screen.Bottom: Here are the Schedule controls—a welcome return of the Mac’s self-scheduling abilities.

Figure 9-10. Top: Here’s what Energy Saver looks like in its expanded condition on a laptop. (On a desktop machine, it’s far simpler.) In the “Put the display to sleep” option, you can specify an independent sleep time for the screen. Bottom: Here are the Schedule controls—a welcome return of the Mac’s self-scheduling abilities.


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