computer science

List of IBM PS/2 models

List of IBM PS/2 models 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 List of IBM PS/2 models rather than just read about it. In short: The Personal System/2 or PS/2 was a line of personal computers developed by International Business Machines Corporation (IBM). Released in 1987, the PS/2 represented IBM's second generation of personal computer following the original IBM PC series, which was retired following IBM's announcement of the PS/2 in April 1987.

Key takeaways

List of IBM PS/2 models 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 List of IBM PS/2 models to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of List of IBM PS/2 models from memory before moving on to harder problems.

Reference excerpt

The Personal System/2 or PS/2 was a line of personal computers developed by International Business Machines Corporation (IBM). Released in 1987, the PS/2 represented IBM's second generation of personal computer following the original IBM PC series, which was retired following IBM's announcement of the PS/2 in April 1987. Most PS/2s featured the Micro Channel architecture bus—a closed standard which was IBM's attempt at recapturing control of the PC market. However some PS/2 models at the low end featured ISA buses, which IBM included with their earlier PCs and which were widely cloned due to being a mostly-open standard. Many models of PS/2 were made, which came in the form of desktops, towers, all-in-ones, portables, laptops and notebooks.

Notes Explanatory notes Submodels with IBM part numbers (P/N) denoting units manufactured and sold outside North America are excluded from this list. Built-in or optional monitors are CRTs unless mentioned otherwise. The Space Saving Keyboard is a 87-key numpad-less version of the Model M. The 25 Collegiate, intended for college students, had two 720 KB floppy drives, maxed out the RAM to 640 KB, and came packaged with the official PS/2 Mouse, Windows 2.0, and four blank floppy disks. Financial workstations came packaged with a 50-key function keypad and were intended for use in banks. LS models are "LAN Stations": essentially the same as their non-LS counterparts but without floppy drives or hard drives and that connect to networks using Ethernet or Token Ring adapters (in essence, diskless workstations). Ultimedia models shipped with a microphone and included SCSI CD-ROM drives, M-Audio sound adapter cards and volume controls and headphone and microphone jacks at the front of the case. Array models are PS/2 Servers with support for RAID. Legend

Models

Main line

PS/2 Server

Portables

Related systems

See also List of third-party Micro Channel computers List of IBM PS/55 models List of IBM Personal Computer models

References

Illustrations

Worked examples

Example 1 — a first encounter with List of IBM PS/2 models

Start with the simplest possible case. Write down what List of IBM PS/2 models 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 List of IBM PS/2 models 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 List of IBM PS/2 models 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 List of IBM PS/2 models

In research: List of IBM PS/2 models 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 List of IBM PS/2 models 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: List of IBM PS/2 models is common in secondary-school and first-year university syllabi. It links to neighbouring topics IBM PS/2, IBM lists, Lists of computer hardware, so understanding it makes those chapters shorter.
In everyday life: Look for List of IBM PS/2 models 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 List of IBM PS/2 models in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what List of IBM PS/2 models 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 List of IBM PS/2 models out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is List of IBM PS/2 models in simple terms?

Why does List of IBM PS/2 models 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 List of IBM PS/2 models?

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 List of IBM PS/2 models.