computer science

NeXT Laser Printer

NeXT Laser Printer 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 NeXT Laser Printer rather than just read about it. In short: The NeXT Laser Printer [NeXT PN N2000] was a 400 DPI PostScript laser printer, sold by NeXT from late 1988 (1988) to 1993 (1993) for the NeXTstation and NeXTcube workstations and manufactured by Canon Inc. It included an adjustable paper tray, which enabled it to print on several paper sizes including A4, letter-size, and those of legal and envelope varieties.

Key takeaways

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

Reference excerpt

The NeXT Laser Printer [NeXT PN N2000] was a 400 DPI PostScript laser printer, sold by NeXT from late 1988 (1988) to 1993 (1993) for the NeXTstation and NeXTcube workstations and manufactured by Canon Inc. It included an adjustable paper tray, which enabled it to print on several paper sizes including A4, letter-size, and those of legal and envelope varieties. It was very similar to other printers based on the Canon SX engine, such as the Apple LaserWriter II series and HP LaserJet II/III, although those other printers only printed at 300x300 dpi. Some parts (such as the toner cartridge and input paper tray) are interchangeable with the LaserJet II/III. The printer used a proprietary high-speed serial interface, and was in essence a predecessor of the software-rendering approach, as it used the DisplayPostscript renderer in NeXTStep rather than a hardware PostScript renderer. Regardless of the lack of dedicated rendering hardware, it usually achieved close to its rated speed of 8 ppm, as the NeXTStation had a much faster CPU (25 or 33MHz 68040) and greater memory capacity (up to 128 MB in Turbo models) than the rendering engines of contemporary printers. Because NeXTStep used DisplayPostscript extensively in its windowing system, the PostScript rendering path was optimized; thus, printed documents had a true output WYSIWYG corresponding to the screen. NeXT also produced a color inkjet printer, the SCSI-I-connected, Tabloid-capable, 360 DPI Color Bubblejet model [NeXT PN N2004 (US) N2005 (UK)], based on the technology of the Canon BubbleJet.

References

External links www.nextcomputers.org

Worked examples

Example 1 — a first encounter with NeXT Laser Printer

Start with the simplest possible case. Write down what NeXT Laser Printer 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 NeXT Laser Printer 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 NeXT Laser Printer 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 NeXT Laser Printer

In research: NeXT Laser Printer 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 NeXT Laser Printer 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: NeXT Laser Printer is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer hardware stubs, Laser printers, NeXT, so understanding it makes those chapters shorter.
In everyday life: Look for NeXT Laser Printer 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 NeXT Laser Printer in 20 minutes

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

Frequently asked questions

What is NeXT Laser Printer in simple terms?

Why does NeXT Laser Printer 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 NeXT Laser Printer?

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 NeXT Laser Printer.