3Close the PowerBook control panel.

If you don’t use the computer for several minutes (how many depends on which setting you choose), it goes to sleep without any action on your part.

To put the computer to sleep before automatic sleep takes effect, choose Sleep from the Special menu or use the Sleep Now module in the Control Strip.

To wake the computer from sleep, press any key (except Caps Lock).

Automatic sleep does not take effect under the following circumstances:

m AppleTalk is turned on in the Chooser and the power adapter is plugged in. m Your computer is connected to a shared disk on the network.

m Your computer’s serial port is in use.

m Your computer is docked in Duo Dock or Duo Dock II.

More about automatic sleep

The Battery Conservation slider controls three power conservation features: system sleep, screen dimming, and hard disk spin down.

m System sleep is a state in which your computer uses only the power it needs to maintain the contents of RAM (such as any open programs and documents, and various control panel settings). If you have a PowerBook Duo 280c, you’ll see a flashing green light above the display when the PowerBook is in sleep.

m Screen dimming saves battery power by automatically dimming the backlight of your PowerBook’s display screen.

m Hard disk spin down stops your computer’s internal hard disk from spinning when it isn’t being used. If the PowerBook is in sleep, the hard disk automatically spins down.

Notice there are five settings on the Battery Conservation slider:

The five settings in the Battery Conservation slider indicate the time it takes for your computer to go to sleep, the screen to dim, and the hard disk to spin down.

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Apple 280C manual More about automatic sleep
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280C, 280 specifications

The Apple 280 and 280C are notable models in Apple's lineup that showcase the company's commitment to innovation and design. Launched as successors to earlier models, these computers were designed to cater to both professional and casual users, with features tailored for productivity, creativity, and seamless user experience.

One of the standout characteristics of the Apple 280 is its sleek and elegant design, which combines aesthetics with functionality. The lightweight chassis makes it easy to transport, appealing to users who are on the go. The display technology utilized in the Apple 280 models set a precedent for visual clarity and vibrancy, allowing users to experience richer colors and sharper images. The 280C model further enhanced this experience with a higher resolution, leading to more precise visuals that are perfect for graphic design and multimedia applications.

Under the hood, the Apple 280 and 280C are powered by robust processors that provide ample performance for demanding tasks. Multitasking is made smooth with sufficient RAM, enabling users to run multiple applications without sacrificing speed or efficiency. This level of performance is particularly advantageous for professionals in fields such as video editing, software development, and data analysis.

In terms of connectivity, the Apple 280 series is equipped with a range of ports that ensure compatibility with various peripherals, whether for personal use or professional setups. The inclusion of USB and Thunderbolt ports allows users to connect high-speed devices seamlessly, enhancing the overall productivity of the system.

Another hallmark of the Apple 280 series is the integration of advanced technologies that enhance user interaction. Features such as high-fidelity sound systems and responsive trackpads provide immersive experiences, whether users are listening to music, engaging in video calls, or navigating through applications.

Security also played a significant role in the design of the Apple 280 and 280C. These models incorporate the latest encryption technologies and secure boot processes, ensuring that user data remains protected against unauthorized access.

Overall, the Apple 280 and 280C stand as a testament to Apple's dedication to innovation, merging cutting-edge technology with user-friendly features to create devices that cater to a wide range of users. With a blend of powerful performance, elegant design, and advanced capabilities, these models have left a lasting impact on the computing landscape and continue to be relevant choices for many today.
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