computer science

Xerox 2700

Xerox 2700 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 Xerox 2700 rather than just read about it. In short: The Xerox 2700 is a discontinued monochrome laser printer from Xerox Corporation. The 2700 was announced in March, 1982, and can print up to 12 pages per minute (PPM), one-sided, on standard A4 or Letter cut-sheet paper.

Key takeaways

Xerox 2700 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 Xerox 2700 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Xerox 2700 from memory before moving on to harder problems.

Reference excerpt

The Xerox 2700 is a discontinued monochrome laser printer from Xerox Corporation. The 2700 was announced in March, 1982, and can print up to 12 pages per minute (PPM), one-sided, on standard A4 or Letter cut-sheet paper. It occupies 5 square feet (0.46 m2) of floor space, and cost $18,995 (equivalent to $63,371 in 2025). The 2700 is rated for a print volume of 15,000 pages per month, although some users got up to 100,000 pages.

History The first successful products based on the xerographic process were for office copying applications with direct optical imaging, but by about 1961 there were experiments under way at Xerox to explore other applications and imaging methods. In 1964, Xerox introduced LDX (Long Distance Xerography) a facsimile system which used a CRT (cathode ray tube) as an imaging source. A version for computer printing was offered as the XGP (Xerox Graphics Printer). In 1973, The Xerox 1200, used an optical analogue of the drum line printer—a spinning optical character drum and a row of xenon tubes whose flashing was timed to project the required characters onto the xerographic photosensor. It was ingenious and unique. In 1977, Xerox introduced laser imaging for computer printing with the 9700 which was based on the 9200 copier and digital imaging technology from PARC. Although the Xerox 8010 Star, introduced in 1981, was not a commercial success, one of the technologies it developed was the XP-12 marking engine for the Xerox 8044 printer, which became the basis for the 2700. The 2700 was rebadged by Digital Equipment Corporation, who marketed it as the LN01.

Data stream Conventional character printer protocols of the time used control characters and escape codes (the ESC character followed by another character) for formatting. Laser printing extensions required additional escape codes for functions like font changes and imbedded images. Xerox developed a page description language known as Xerox Escape Sequence (XES).

Specifications The 2700 prints 12 pages per minute at 300x300 dots per inch(DPI). It has two 250-sheet input paper cassettes, and a 500 sheet offsetting stacker to offset sections of output between print jobs or copy groups. It uses an Intel 8086 CPU and an Intel 8089 coprocessor for input/output. It comes with 64 KB or 256 KB of RAM and 32 KB of ROM, with up to 4 32 KB in plug-in cartridges. The on-board ROM holds two font sets, portrait and landscape. The optional plug-in cartridges hold fonts and logos, and additional bitmaps can be downloaded. The 2700 offers a variety of interface options. it provides serial Binary Synchronous (Bisync)—IBM 2770/2780/3780 emulation or asynchronous communications. It also supports parallel Centronics or Dataproducts emulation.

Worked examples

Example 1 — a first encounter with Xerox 2700

Start with the simplest possible case. Write down what Xerox 2700 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 Xerox 2700 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 Xerox 2700 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 Xerox 2700

In research: Xerox 2700 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 Xerox 2700 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: Xerox 2700 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer-related introductions in 1982, Computer hardware stubs, Laser printers, so understanding it makes those chapters shorter.
In everyday life: Look for Xerox 2700 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.

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How to study Xerox 2700 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Xerox 2700 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 Xerox 2700 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Xerox 2700 in simple terms?

Why does Xerox 2700 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 Xerox 2700?

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 Xerox 2700.