computer science

Wireless keyboard

Wireless keyboard 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 Wireless keyboard rather than just read about it. In short: A wireless keyboard is a computer keyboard that allows the user to communicate with computers, tablets, or laptops with the help of wireless technologies such as radio frequency (RF), WiFi, Bluetooth, or infrared (IR) technology. Wireless keyboards based on infrared technology use light waves to transmit signals to other infrared-enabled devices.

Key takeaways

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

Reference excerpt

A wireless keyboard is a computer keyboard that allows the user to communicate with computers, tablets, or laptops with the help of wireless technologies such as radio frequency (RF), WiFi, Bluetooth, or infrared (IR) technology. Wireless keyboards based on infrared technology use light waves to transmit signals to other infrared-enabled devices. In case of radio frequency technology, a wireless keyboard communicates using signals which range from 27 MHz to up to 2.4 GHz. The majority of wireless keyboards today work on 2.4 GHz radio frequency. Bluetooth is another technology that is being widely used by wireless keyboards. These devices connect and communicate with their parent device via the Bluetooth protocol. A wireless keyboard can be connected using RF technology with the help of two parts: a transmitter and a receiver. The radio transmitter is inside the wireless keyboard. The radio receiver plugs into a keyboard port or USB port. Once the receiver and transmitter are plugged in, the computer recognizes the keyboard and mouse as if they were connected via a cable.

Types

Standard-size wireless keyboard — These are standard-sized wireless keyboards. Foldable — hinges allow for folding of keyboard Portable keyboard with touchpad — Keyboard comes with integrated touchpad Portable with Stand — comes with tablet/smartphone stand Roll-up wireless keyboard — wireless keyboard that can be rolled up when not in use. Mini Wireless Keyboard — Palm-sized keyboard with an integrated touch pad; uses thumb typing Slim keyboard

Bluetooth keyboard A Bluetooth keyboard is a wireless keyboard that connects and communicates with its parent device via the Bluetooth protocol. These devices are widely used with portable devices such as smartphones and tablets, though they are also used with laptops, ultrabooks, and even regular desktop computers. Wireless keyboards first emerged in the early 1980s, although these were usually prototypes for specialized jobs. By the early 2000s, Bluetooth keyboards for PCs had started to gain market share, with Microsoft unveiling the world’s first commercially available Bluetooth wireless mouse and keyboard solution in April 2002, a combination that remains commercially popular to this day. Bluetooth keyboards became especially popular starting in 2011, coinciding with the popularity of portable devices such as smartphones and the recently released iPad. Most Bluetooth keyboards have standard qwerty layouts, though some mini Bluetooth keyboards may have a different layout. Bluetooth keyboards are compatible with all the leading operating systems such as Android, iOS, Linux, macOS, and Windows. Since they are primarily used for portable devices, Bluetooth keyboards have special function keys for Android and iOS operating systems. Most Bluetooth keyboards, except a few, are not universally compatible across operating systems. Thus, compatibility of the keyboard should be checked before purchasing one; this is mainly because of the special function keys which differ between Android and iOS.

See also Apple Wireless Keyboard Logitech Unifying receiver Remote control

References

Illustrations

Wireless keyboard: A wireless keyboard combo — A wireless keyboard combo

Wireless keyboard: Bluetooth keyboard — Bluetooth keyboard

Worked examples

Example 1 — a first encounter with Wireless keyboard

Start with the simplest possible case. Write down what Wireless keyboard 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 Wireless keyboard 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 Wireless keyboard 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 Wireless keyboard

In research: Wireless keyboard 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 Wireless keyboard 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: Wireless keyboard is common in secondary-school and first-year university syllabi. It links to neighbouring topics American inventions, Computer keyboard types, Remote control, so understanding it makes those chapters shorter.
In everyday life: Look for Wireless keyboard 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 Wireless keyboard in 20 minutes

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

Frequently asked questions

What is Wireless keyboard in simple terms?

Why does Wireless keyboard 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 Wireless keyboard?

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 Wireless keyboard.