computer science

Keith Diefendorff

Keith Diefendorff 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 Keith Diefendorff rather than just read about it. In short: Keith Diefendorff is a computer architect and veteran in the microprocessor industry. Diefendorff is one of the persons that has led the industry in developing RISC processors, both for embedded systems and superscalar high performance systems.

Key takeaways

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

Reference excerpt

Keith Diefendorff is a computer architect and veteran in the microprocessor industry. Diefendorff is one of the persons that has led the industry in developing RISC processors, both for embedded systems and superscalar high performance systems. He is one of the main designers of the PowerPC family of processors.

Background Keith Diefendorff started at Texas Instruments, designing integrated circuits processors and systems. Later Diefendorff joined Motorola and was the chief architect of a second-generation implementation of the 88000 instruction set architecture, the 88110. The 88110 was not a commercial success, and when Motorola shifted focus to creating a new RISC architecture with IBM, Diefendorff was assigned as chief architect for the PowerPC. After his work at Motorola Diefendorff moved to NexGen as director of technical x86-strategy. Diefendorff joined AMD when NexGen was acquired by AMD. From AMD Diefendorff then moved to Apple as architect for the AltiVec media extensions developed for the PowerPC processors used by Apple. Keith Diefendorff has been working in the embedded processor space. First at the embedded processor IP-core company ARC International. After ARC Diefendorff moved to MIPS Technologies. Diefendorff has also worked as processor analyst, and editor in chief (1998–2001) for the industry magazine Microprocessor Report.

I'm not sure competition from any company is Intel's biggest problem. A bigger problem is generating demand for its faster, more profitable desktop chips...

References

External links https://www.linkedin.com/pub/keith-diefendorff/41/bab/227 https://www.youtube.com/watch?v=9la7398ruXQ

Worked examples

Example 1 — a first encounter with Keith Diefendorff

Start with the simplest possible case. Write down what Keith Diefendorff 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 Keith Diefendorff 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 Keith Diefendorff 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 Keith Diefendorff

In research: Keith Diefendorff 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 Keith Diefendorff 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: Keith Diefendorff is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer architects, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Keith Diefendorff 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 Keith Diefendorff in 20 minutes

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

Frequently asked questions

What is Keith Diefendorff in simple terms?

Why does Keith Diefendorff 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 Keith Diefendorff?

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 Keith Diefendorff.