computer science

Printer cable

Printer cable 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 Printer cable rather than just read about it. In short: Printer cable refers to the cable that carries data between a computer and a printer. There are many different types of cables, for example: Serial: RS-232, EIA-422 Parallel FireWire USB Parallel port printers have been slowly phased out, and are now difficult to find for the most part, being considered as an obsolete legacy port on most new computers.

Key takeaways

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

Reference excerpt

Printer cable refers to the cable that carries data between a computer and a printer. There are many different types of cables, for example:

Serial: RS-232, EIA-422 Parallel FireWire USB Parallel port printers have been slowly phased out, and are now difficult to find for the most part, being considered as an obsolete legacy port on most new computers. Those who have printers and scanners with only parallel port may still be able to connect the devices via the use of USB adapters a.k.a. USB-to-parallel cable, or use a PCI parallel printer port card.

References

Illustrations

Worked examples

Example 1 — a first encounter with Printer cable

Start with the simplest possible case. Write down what Printer cable 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 Printer cable 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 Printer cable 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 Printer cable

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

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

Frequently asked questions

What is Printer cable in simple terms?

Printer cable refers to the cable that carries data between a computer and a printer. There are many different types of cables, for example: Serial: RS-232, EIA-422 Parallel FireWire USB Parallel port printers have been slowly phased out, and are now difficult to find for the most part, being consi…

Why does Printer cable 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 Printer cable?

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 Printer cable.