Acer TravelMate 720 User Guide - Page 59

Power Management, Display Standby Mode

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Power Management Power Management This computer has a built-in power management unit that monitors system activity. System activity refers to any activity involving one or more of the following devices: keyboard, mouse, floppy drive, hard disk, peripherals connected to the serial and parallel ports, and video memory. If no activity is detected for a period of time (called an inactivity time-out), the computer stops some or all of these devices in order to conserve energy. This computer employs a power management scheme that allows for maximum power conservation and maximum performance at the same time. Power Management Modes Display Standby Mode Screen activity is determined by the keyboard, the built-in touchpad, and an external PS/2 pointing device. If these devices are idle for the period specified by the LCD backlight Timeout value, the display shuts off until you press a key or move the touchpad or external mouse. "Automatic Dim" Feature The computer has a unique "automatic dim" power-saving feature. When the computer is using AC power and you disconnect the AC adapter from the computer, it automatically dims the LCD backlight to save power. If you reconnect AC power to the computer, it automatically adjusts the LCD backlight to a brighter level. Chapter 2 Operating on Battery Power 39

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Power Management
Chapter 2
Operating on Battery Power
39
Power Management
This computer has a built-in power management unit that
monitors system activity.
System activity refers to any
activity involving one or more of the following devices:
keyboard, mouse, floppy drive, hard disk, peripherals
connected to the serial and parallel ports, and video
memory.
If no activity is detected for a period of time (called
an inactivity time-out), the computer stops some or all of
these devices in order to conserve energy.
This computer employs a power management scheme that
allows for maximum power conservation and maximum
performance at the same time.
Power Management Modes
Display Standby Mode
Screen activity is determined by the keyboard, the built-in
touchpad, and an external PS/2 pointing device.
If these
devices are idle for the period specified by the LCD
backlight Timeout value, the display shuts off until you
press a key or move the touchpad or external mouse.
"Automatic Dim" Feature
The computer has a unique "automatic dim"
power-saving
feature.
When the computer is using AC power and you
disconnect the AC adapter from the computer, it
automatically dims the LCD backlight to save power.
If you
reconnect AC power to the computer, it automatically
adjusts the LCD backlight to a brighter level.