C H A P T E R 6

Data Input

Paragraph Input

Another interface element accepts the input of multiple lines or paragraphs of text. This interface element can appear simply as a blank area in which a user can write information, but usually it contains one or more horizontal dotted lines, like lined writing paper. These lines indicate to users that the area accepts input. Figure 6-10 shows an example.

Figure 6-10Interface element for multiple-line or paragraph text input

User writes anywhere

Structured List Input

The Newton interface also includes an element for the input of structured lists such as outlines and checklists. A structured list consists of a sequence of topics, each of which may be one or more paragraphs long. To the left of each topic is a small circular topic marker and an optional checkbox. A user can drag a topic’s marker to move that topic above or below another topic. A user can make a topic subordinate or not subordinate to the topic above it by dragging its marker right or left. This ability to create a topic hierarchy can be suppressed by an application in any structured list. Figure 6-11 shows an example of a structured list view.

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Writing, Drawing, and Editing

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Apple 2 manual Paragraph Input, Structured List Input

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.