computer science

Graffiti 2

Graffiti 2 is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Graffiti 2 rather than just read about it. In short: "Graffiti 2 Powered by Jot" was introduced in 2003 as a revised version of the original Palm OS handwriting system Graffiti. In January 2003, PalmSource announced the change explaining that Graffiti 2 was based on Jot by Communication Intelligence Corporation (CIC) and would replace the original version of Graffiti.

Key takeaways

Graffiti 2 belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Graffiti 2 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Graffiti 2 from memory before moving on to harder problems.

Reference excerpt

"Graffiti 2 Powered by Jot" was introduced in 2003 as a revised version of the original Palm OS handwriting system Graffiti. In January 2003, PalmSource announced the change explaining that Graffiti 2 was based on Jot by Communication Intelligence Corporation (CIC) and would replace the original version of Graffiti. Graffiti 2 made its debut in Palm OS 4.1.2 for Motorola DragonBall-based handhelds and in Palm OS Garnet 5.2 for ARM-based ones.

History The primary reason for the change was that in April 1997 Xerox had sued PalmSource, Inc. over its use of Graffiti. After a legal fight lasting a number of years, and despite the dismissal of the case by a federal judge, Xerox won a reversal late in 2001 in the U.S. Court of Appeals. As part of their press for the new handwriting recognition system, PalmSource said that Jot and Graffiti 2 more closely followed the standard ways of drawing letters and numbers than the original Graffiti did; they also said that lowering the learning curve would attract more new users to the platform. The change, on the other hand, alienated many long-time Palm users who were already happy with the previous version of Graffiti which they claimed was much easier to use (though perhaps not to learn). A prominent issue cited by detractors is the number of stylus strokes required to draw a character. The original Graffiti recognition software required only a single stylus stroke for each alphanumeric character. Graffiti 2, however, required two strokes to draw some commonly used characters. This was perceived as extra work because the default settings for "i" and "t", the fifth and second most frequently-used letters in English, required two strokes. Preferences settings allowed switching variants for letters P, T, Y and $, but none of them could be switched back to single stroke.

References

Worked examples

Example 1 — a first encounter with Graffiti 2

Start with the simplest possible case. Write down what Graffiti 2 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Graffiti 2 before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Graffiti 2 ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Graffiti 2

In research: Graffiti 2 appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Graffiti 2 in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Graffiti 2 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computing input devices, Palm OS, Personal digital assistant software, so understanding it makes those chapters shorter.
In everyday life: Look for Graffiti 2 outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Graffiti 2” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Graffiti 2 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Graffiti 2 means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Graffiti 2 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Graffiti 2 in simple terms?

Why does Graffiti 2 matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Graffiti 2?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Graffiti 2.