Power Management; Power Management Modes; Display Standby Mode - Acer TravelMate 330 Series User Manual

42 Chapter 2
Operating on Battery Power

Power Management

Power Management Modes

Display Standby Mode

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
supports APM (Advanced Power Management) or ACPI
(Advanced Configuration and Power Interface) which allows for
maximum power conservation and maximum performance at the
same time.
If your computer is set for APM, you can set timeout values for
your computer's devices before power-saving methods are
applied to these devices. If your computer is set for ACPI,
Windows handles all power-saving chores for your computer.
Note: Power management (APM or ACPI) greately prolongs your battery life.
See "Advanced Power Management" on page 46 and "Advanced Configuration
and Power Interface" on page 46 for more information.
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 Turn Off Display value,
the display shuts off until you press a key or move the touchpad
or external mouse.