computer science

Quadram Quadcolor

Quadram Quadcolor 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 Quadram Quadcolor rather than just read about it. In short: The Quadram Quadcolor is a graphics card for IBM PC computers by Quadram Corporation, first sold in 1983. It is a superset of the then-current CGA standard, using the same monitor standard (4-bit digital TTL RGBI monitor or NTSC composite video) and providing the same pixel resolutions.

Key takeaways

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

Reference excerpt

The Quadram Quadcolor is a graphics card for IBM PC computers by Quadram Corporation, first sold in 1983. It is a superset of the then-current CGA standard, using the same monitor standard (4-bit digital TTL RGBI monitor or NTSC composite video) and providing the same pixel resolutions.

Description The Quadcolor has twice the memory of a standard CGA board (32k, compared to 16k), and offers a 640 × 200 mode with two freely definable colours. If used with the Quadcolor II enhancement board, the additional memory can be used in graphics modes to double the color depth, allowing for two additional graphics modes — 320 × 200 resolution with 136 colors, or 640 × 200 resolution with 16 colors. This card is supported by Dr. Halo II and Turbo Pascal Graphix Toolbox.

Models Quadram Quadcolor I Quadram Quadcolor II

Output capabilities Quadram Quadcolor I offers the following modes:

320 × 200 with 4 colors (standard CGA mode) 640 × 200 with 2 colors (from a 4-bit RGBI hardware palette) With the Quadcolor II enhancement board, Quadram Quadcolor offers the following modes:

320 × 200 with 136 colors (obtained from a mix of two 16 color palettes) 640 × 200 with 16 colors (4-bit RGBI hardware palette).

See also Tandy Graphics Adapter, a graphics hardware system with similar capabilities. Plantronics Colorplus Hercules InColor Card Orchid Graphics Adapter

References

External links Quadram Quadcolor I and II Drivers Archived 2023-09-03 at the Wayback Machine Quadram Quadcolor I – Operation Manual Quadram Quadcolor II – Operation Manual Quadram Quadjet manual

Illustrations

Worked examples

Example 1 — a first encounter with Quadram Quadcolor

Start with the simplest possible case. Write down what Quadram Quadcolor 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 Quadram Quadcolor 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 Quadram Quadcolor 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 Quadram Quadcolor

In research: Quadram Quadcolor 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 Quadram Quadcolor 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: Quadram Quadcolor is common in secondary-school and first-year university syllabi. It links to neighbouring topics Computer-related introductions in 1983, Computer display standards, Computer hardware stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Quadram Quadcolor 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 Quadram Quadcolor in 20 minutes

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

Frequently asked questions

What is Quadram Quadcolor in simple terms?

Why does Quadram Quadcolor 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 Quadram Quadcolor?

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 Quadram Quadcolor.