3 Click the “Allow processor cycling” checkbox to remove the X.

This feature does not appear if your have a PowerBook Duo 280 or 280c.

4 Close the PowerBook control panel.

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To turn processor cycling back on, click the “Allow processor cycling” checkbox again.

IMPORTANT To conserve battery power, turn processor cycling off only when using programs that it interferes with. Turn processor cycling back on again as soon as possible.

Processor speed

The reduced processor speed feature appears in the PowerBook control panel if you have a PowerBook Duo 230. Reducing processor speed allows you to slow the computer’s microprocessor speed (from 33 to 16 MHz). Some programs may work more slowly, but you may gain up to 10–15 minutes of work time before you need to recharge the battery. (The amount of time you gain depends on how you are using the computer.)

To slow the processor speed, follow these steps.

Choose Control Panels from the Apple (K) menu, and open the PowerBook control panel. (Or use the Power Settings module in the Control Strip to open the PowerBook control panel.)

Slide the switch to Custom.

Click the “Reduce processor speed” checkbox to select it.

Choose Restart from the Special menu.

The computer runs at the lower microprocessor speed until you click the “Reduce processor speed” box again to remove the check and then restart the computer.

Power Management

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Apple 280C manual Processor speed
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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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