computer science

Keyboard computer

Keyboard computer 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 Keyboard computer rather than just read about it. In short: A keyboard computer is a computer which contains all of the regular components of a personal computer, except for a screen, in the same housing as the keyboard. The power supply is typically external and connects to the computer via an adapter cable.

Key takeaways

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

Reference excerpt

A keyboard computer is a computer which contains all of the regular components of a personal computer, except for a screen, in the same housing as the keyboard. The power supply is typically external and connects to the computer via an adapter cable. The motherboard is specially designed to fit inside, and the device is larger than most standard keyboards. Additional peripheral devices such as a monitor are connected to the computer via external ports. Usually a minimum of storage devices, if any, is built in. Most home computers produced during the late 1970s and 1980s were keyboard computers, the ZX Spectrum and most models of the Atari ST, Xiao Bawang, Commodore 64, Apple II, and Amiga being prime examples. While this form factor went out of style around 1990 in favour for more modular desktop setups, some notable x86 keyboard computers have been built, like the Olivetti Prodest PC1 in 1988 and the Schneider Euro PC Series between 1988 and 1995. Newer computers to employ this form factor include the Commodore 64 WebIt by Tulip, the Asus Eee Keyboard, which uses Intel Atom processors and Solid-state drive, and the unreleased Commodore Invictus PC. In November 2020, Raspberry Pi Foundation announced Raspberry Pi 400, a modified version of their previous Raspberry Pi 4 housed entirely within a keyboard. Similarly, in December of 2024, the Raspberry Pi Foundation released the Raspberry Pi 500 and, in September of 2025, released the Raspberry Pi 500+, both based on the Raspberry Pi 5.

List of best selling keyboard computers

See also IBM PC keyboard All-in-one computer History of computing Home computer Headless laptop

References

Illustrations

Worked examples

Example 1 — a first encounter with Keyboard computer

Start with the simplest possible case. Write down what Keyboard computer 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 Keyboard computer 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 Keyboard computer 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 Keyboard computer

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

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

Frequently asked questions

What is Keyboard computer in simple terms?

Why does Keyboard computer 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 Keyboard computer?

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 Keyboard computer.