computer science

Laser 50

Laser 50 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 Laser 50 rather than just read about it. In short: The Laser 50 aka Laser-One is an educational portable computer sold by Vtech that ran the BASIC programming language. It was released in 1984.

Key takeaways

Laser 50 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 Laser 50 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Laser 50 from memory before moving on to harder problems.

Reference excerpt

The Laser 50 aka Laser-One is an educational portable computer sold by Vtech that ran the BASIC programming language. It was released in 1984.

Specifications The Laser 50 used a Zilog Z80 central processing unit running at 3.5 MHz, 2 kB to 18 kB of RAM, a 12 kB ROM, and an 80×7 dots LCD screen.

Worked examples

Example 1 — a first encounter with Laser 50

Start with the simplest possible case. Write down what Laser 50 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 Laser 50 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 Laser 50 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 Laser 50

In research: Laser 50 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 Laser 50 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: Laser 50 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer-related introductions in 1984, Computer hardware stubs, Microcomputers, so understanding it makes those chapters shorter.
In everyday life: Look for Laser 50 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 Laser 50 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Laser 50 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 Laser 50 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Laser 50 in simple terms?

The Laser 50 aka Laser-One is an educational portable computer sold by Vtech that ran the BASIC programming language. It was released in 1984.

Why does Laser 50 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 Laser 50?

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 Laser 50.