computer science

Intel 8289

Intel 8289 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 Intel 8289 rather than just read about it. In short: The Intel 8289 is a Bus arbiter designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package.

Key takeaways

Intel 8289 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 Intel 8289 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Intel 8289 from memory before moving on to harder problems.

Reference excerpt

The Intel 8289 is a Bus arbiter designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package. The 8086 (and 8088) operate in maximum mode, so they are configured primarily for multiprocessor operation or for working with coprocessors. Necessary control signals are generated by the 8289. This version was available for US$44.80 in quantities of 100.

References

External links Bus-Arbiter Jim Nadir: Designing 8086, 8088, 8089 Multiprocessing System With The 8289 Bus Arbiter Archived 2021-08-29 at the Wayback Machine, Application Note (AP-51), März 1979, Intel Corporation.

Worked examples

Example 1 — a first encounter with Intel 8289

Start with the simplest possible case. Write down what Intel 8289 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 Intel 8289 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 Intel 8289 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 Intel 8289

In research: Intel 8289 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 Intel 8289 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: Intel 8289 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer hardware stubs, Input/output integrated circuits, Intel chipsets, so understanding it makes those chapters shorter.
In everyday life: Look for Intel 8289 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 Intel 8289 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Intel 8289 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 Intel 8289 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Intel 8289 in simple terms?

The Intel 8289 is a Bus arbiter designed for Intel 8086/8087/8088/8089. The chip is supplied in 20-pin DIP package.

Why does Intel 8289 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 Intel 8289?

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 Intel 8289.