C H A P T E R 8

Newton Services

the system is to conduct a search. The Find slip in Figure 8-8 depicts a search for the word “Daphne” in the Notepad and Dates applications.

Figure 8-8Searching specified applications

Normally the Find service searches applications in their entirety, but the currently active application can separate its data and list the separate parts in the checklist that appears when a user selects the Selected radio button in the Find slip. For example, a personal finance application could allow users to search its check register, credit card register, and accounts list independently.

Customizing the Standard Find Slip

In addition to the system-supplied variations on the Find slip, your application can modify or completely replace the Find slip when it is frontmost. Typically, your application would do this in order to provide a customized user interface for specialized searches. For example, your application could add a labeled input line with a picker that enables a user to conduct specialized finds.

If your application specifies custom interface elements, the system adds them to the top portion of the standard Find slip whenever two conditions are met. First, your application must be frontmost. Second, a user must select your application’s radio button in the Find slip.

Find

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Apple 2 manual Customizing the Standard Find Slip, 8Searching specified applications

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.