computer science

Program (machine)

Program (machine) 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 Program (machine) rather than just read about it. In short: A program is a set of data or instructions that controls the behavior of a machine. Examples include: Mechanisms The automatic flute player, which was invented in the 9th century by the Banū Mūsā brothers in Baghdad, is the first known example of a programmable machine.

Key takeaways

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

Reference excerpt

A program is a set of data or instructions that controls the behavior of a machine. Examples include:

Mechanisms The automatic flute player, which was invented in the 9th century by the Banū Mūsā brothers in Baghdad, is the first known example of a programmable machine. The work of the Banu Musa was influenced by their Hellenistic forebears, but it also makes significant improvements over Greek creation. The pinned-barrel mechanism, which allowed for programmable variations in the rhythm and melody of the music, was the key contribution given by the Banu Musa. In 1206, the Muslim inventor Ismail al-Jazari (in the Artuqid Sultanate) described a drum machine which may have been an example of a programmable automaton. Barrels, punched cards, and music rolls encoding music to be played by player pianos, fairground organs, barrel organs, and music boxes. The sequence of punched cards used by a Jacquard loom to produce a given pattern within woven cloth. Invented in 1801, it used holes in punched cards to represent sewing loom arm movements in order to generate decorative patterns automatically.

Electronics Some programmable equipment and appliances only allow their users to select predefined options and/or set predefined parameters. The user is not required or allowed to write a computer program (textual, visual, or otherwise).

The "program" of a programmable thermostat consist of user-changeable parameters (mode, time, temperature) in the entries of a schedule. The "program" or patch of a programmable music synthesizer adjusts parameters and switches that interconnect modules. The "program" of many programmable integrated circuits is data that it permanently stores for retrieval (programmable ROM etc.), and/or govern operation (programmable logic device etc.).

Computers A computer program (software) is a list of instructions that can be executed by a computer. When a programmable computer, programmable calculator, or programmable logic controller executes a program, its processor follows the instructions or commands that the program contains. Each instruction produces effects that alter the state of the machine according to its predefined meaning.

See also Program (disambiguation) All pages with titles containing programmable Programmer

References

Worked examples

Example 1 — a first encounter with Program (machine)

Start with the simplest possible case. Write down what Program (machine) 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 Program (machine) 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 Program (machine) 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 Program (machine)

In research: Program (machine) 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 Program (machine) 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: Program (machine) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Arab inventions, Computing stubs, Computing terminology, so understanding it makes those chapters shorter.
In everyday life: Look for Program (machine) 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 Program (machine) in 20 minutes

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

Frequently asked questions

What is Program (machine) in simple terms?

A program is a set of data or instructions that controls the behavior of a machine. Examples include: Mechanisms The automatic flute player, which was invented in the 9th century by the Banū Mūsā brothers in Baghdad, is the first known example of a programmable machine.

Why does Program (machine) 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 Program (machine)?

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 Program (machine).