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computer science

KOM (bulletin board system)

KOM (bulletin board system) 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 KOM (bulletin board system) rather than just read about it. In short: KOM is a type of bulletin board system, with a text-based (as opposed to a menu based) input system. The first was QZ KOM, but soon others imitated the user interface.

Key takeaways

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

Reference excerpt

KOM is a type of bulletin board system, with a text-based (as opposed to a menu based) input system. The first was QZ KOM, but soon others imitated the user interface. The QZKOM system was first opened in 1978, which probably makes it the first Swedish-developed forum service. It was banned by the Swedish government late the same year, reopened with permission in 1979. Before the introduction of QZKOM, QZ ran the American system Forum-Planet which provided similar services but only for very small user groups. One of the larger KOM systems outside QZ was Permobas, which was sponsored by Permobil. The first version ran on two (later seven) ABC 80 with 300 bit/s modems connected to a 5 or 10 MB hard disk. One of the Permobas users was Henrik Schyffert. Schyffert later started his own BBS named "Ring så spelar vi". When Permobas was shut down in December 1985 the users were moved over to the newly started Computext. Computext was funded by Lars Olof Kanngards foundation IFF - Institutet för Framtiden (The Institute For the Future) and the tech team was based on the two master-brains: Mats Engström, Göran Olsson and Allan Varcoe and later also Per Melin. The old ABC80 become thanks to sponsorship from Digital Equipment a later version was operating its services on PDP computers and later on VAX systems. Computext ran until the late 1990s. Lars Olof Kanngard and IFF sold its operation to Esselte and all the services continued under the name Esselte Voice AB.

See also SklaffKOM

References

External links History of the KOM Computer Conferencing System Full contents of some discussions in QZKOM in the 1980s (In Swedish)

Worked examples

Example 1 — a first encounter with KOM (bulletin board system)

Start with the simplest possible case. Write down what KOM (bulletin board system) 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 KOM (bulletin board system) 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 KOM (bulletin board system) 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 KOM (bulletin board system)

In research
KOM (bulletin board system) 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 KOM (bulletin board system) 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
KOM (bulletin board system) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Bulletin board systems, Network software stubs, so understanding it makes those chapters shorter.
In everyday life
Look for KOM (bulletin board system) 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 KOM (bulletin board system) in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what KOM (bulletin board system) means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain KOM (bulletin board system) out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is KOM (bulletin board system) in simple terms?

KOM is a type of bulletin board system, with a text-based (as opposed to a menu based) input system. The first was QZ KOM, but soon others imitated the user interface.

Why does KOM (bulletin board system) 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 KOM (bulletin board system)?

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 KOM (bulletin board system).

Tags

  • Bulletin board systems
  • Network software stubs

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