Bấm vào nút trackpad (hoặc gõ ngón tay của bạn trên trackpad) một lần. Whoosh! Tiger ra mắt, hoặc bắt đầu, ứng dụng iTunes, và bạn thấy một cửa sổ giống như một trong Hình 4-3. Nếu một biểu tượng ứng dụng đã được lựa chọn (mà tôi thảo luận trong phần tiếp theo), bạn chỉ đơn giản có thể nhấn Ô + O để khởi động nó. | Chapter 6 System Preferences Are Your Friends 97 The tabs are as follows Sleep To save electricity drag the Put the Computer to Sleep When It Is Inactive For slider to a delay period that triggers sleep mode when you re away from the keyboard for a significant period of time. I prefer 30 minutes. If your Mac must always remain alert and you want to disable sleep mode entirely choose Never. You can set the delay period for blanking your monitor separately from the sleep setting with the Put the Display to Sleep When the Computer Is Inactive For slider. To conserve the maximum juice and cut down on wear select the Put the Hard Disk s to Sleep When Possible check box to power-down your hard drives when they re not needed. This might cause a delay of a second or two while loading or saving files because the drives must spin back up. You can set Tiger to start or shut down your Mac laptop at a scheduled time. Click the Schedule button and then select the desired schedule the Start Up Wake check box and the Shut Down Sleep pop-up menu to enable them. Set the trigger time by clicking the up and down arrows next to the time display for each schedule. Click OK to return to the Energy Saver pane. Options From this tab you can specify events that can awaken your Mac from sleep mode such as a ring signal from your modem. If you prefer to send your laptop to sleep by pressing the Power button select the Allow Power Button to Sleep the Computer check box. Tiger can also restart your Mac automatically after a power failure. If you re running an older laptop that uses a G4 processor the Processor Performance pop-up menu appears in the Options tab. You can use this control to fine-tune the performance of your laptop s processor to reduce its power consumption and heat buildup. Choose Automatic to allow Tiger to monitor and tweak your processor s performance whenever possible. Choose Highest if you want the best possible performance at all times note that this setting may result in
