C H A P T E R 8

Newton Services

A user sets the volume of alarm sounds in the Alarm section of the Prefs application. Your application should not change the alarm volume set by the user.

Sound

Your application can easily associate a sound with a system event or play sound on demand. Each sound can be played synchronously, so that other tasks must wait for it to finish, or asynchronously, so that another task can begin before the sound finishes. The Newton system includes a number of built-in sounds, which the built-in applications use and other applications can use as well. Newtons play only sampled (recorded or prefabricated) sounds; the Newton system does not synthesize sound.

The built-in applications and transports use sounds extensively but unobtrusively to provide secondary feedback and enrich the user experience. Sound should always play a secondary role in Newton software. Don’t make sound the sole conveyer of information. For users who must turn the sound off or who are hearing-impaired, your application should convey vital information visually as well.

Find

The Newton system provides a Find service with which a user can search participating applications for text, dates, or other types of data. A user specifies what to find in a Find slip that may be supplied by the system, customized by an application developer, or supplied entirely by the developer. The Find slip appears when a user taps the Find button, which is a picture button that looks like a magnifying glass. Figure 8-5 illustrates the Find button and the Find slip that the system supplies.

8-6Sound

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Apple 2 manual Sound, Find

2 specifications

The Apple II is a defining product in the history of personal computing, first introduced in 1977 by Apple Computer, Inc. Designed by Steve Wozniak, the Apple II was one of the first highly successful mass-produced microcomputer products and played a significant role in bringing personal computers into homes and schools.

One of the Apple II's standout features was its color graphics capability. It was one of the first personal computers to provide color output, thanks to its built-in video interface. The initial model supported a resolution of 280x192 pixels with a palette of 6 colors, which allowed for vibrant visuals that set it apart from contemporaries like the monochrome Altair 8800.

The Apple II was notable for its open architecture. This design allowed users to expand the computer's capabilities easily through a series of expansion slots. Users could add floppy disk drives, additional memory, and various peripheral devices, making the system highly adaptable to individual needs. This encouraged a thriving ecosystem of third-party hardware and software, which contributed to its popularity.

Another significant feature was its use of the 6502 microprocessor. This 8-bit CPU was not only affordable but also powerful for its time, allowing the Apple II to run various applications efficiently. Along with a built-in keyboard and an innovative plastic case that housed its components, the design was user-friendly and appealing.

The Apple II also introduced the concept of “bootable software” through the use of floppy disks. The disk operating system (DOS) allowed users to store and run multiple programs without having to reload software manually, providing a level of convenience that had not been widely available before. Key software like VisiCalc, the first spreadsheet program, helped boost sales, showcasing the Apple II's utility in business and education environments.

The computer was also well-known for its early adoption of BASIC programming language. Apple provided an operating system that supported Applesoft BASIC, which enabled users, including students, to write their programs, further fostering a community of developers.

In summary, the Apple II's color graphics, open architecture, powerful 6502 processor, innovative use of floppy disks, and support for BASIC programming made it a revolutionary product in its time. Its legacy laid the groundwork for future personal computers and established Apple as a leader in the burgeoning tech industry. The Apple II remains an iconic symbol of the early personal computing era, reflecting a generation's transition into a digitally connected world.