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Generated draft

arithmetic logic unit

vr.tr.arithmetic-logic-unit · PHY.OBJ
Thing Registry Physical world and living systems

Generated draft, first pass

This model was drafted by rule from what the registry knows about the thing. It proposes which bundles a real model will need and which questions research must answer. It is not researched and no sentence in it is sourced.

Written from the archetype playbook - what this kind of thing needs beyond identity and provenance - and from the structure that recurred across 6,333 models already researched by two engines. Applied to this entry by rule. No source was read for this thing and no claim here is researched. This entry carries no facets of its own, so they were inferred from its domain - a guess about a whole domain applied to one thing.

Generator: vr.draft.v3

Purpose and description

Give an agent a durable, checkable way to recognise a arithmetic logic unit, record what state it is in, and decide what may be done with it.

A physical thing registered under PHY.OBJ. The registry names it; this draft has not been given a definition yet.

It can be observed and measured.

Distinguishing features

Names folded into this entry, which a task may need to split apart again: binary multiplier, binary adder, carry-lookahead adder, carry-skip adder, Brent–Kung adder, Kogge–Stone adder.

6 finer distinctions are held as aliases rather than separate entries, because telling them apart needs a task that asks for it.

Described in 54 Wikipedia languages, which is a measure of how widely the thing is known, not of how important it is.

Physical character

Made of: matter you can touch.

Mobility varies between examples.

Does nothing on its own; everything it does, something else did to it.

These come from the domain this entry sits in rather than from the entry itself, so treat them as a first guess about the whole domain applied to one thing.

How it is recognised

Nothing to see: a unit is a convention. What is seen is an instrument reading in it.

Related models

covers - Finer kinds folded into this entry because telling them apart needs a task that asks for it. Each is a model waiting to be split out when one does.

binary multiplierbinary addercarry-lookahead addercarry-skip adderBrent–Kung adderKogge–Stone adder

Described in 54 Wikipedia languages, which measures how widely it is written about rather than how important or how common it is. 6 finer distinctions are held inside this entry as names rather than as separate models.

Also called

binary multiplierbinary addercarry-lookahead addercarry-skip adderBrent–Kung adderKogge–Stone adder

Where this came from

wikidata · CC0 1.0

Drafted structure

Bundle to layer to finding to question, as the second pass will find it: 7 bundles · 15 layers · 17 findings · 49 questions.

Identity, naming and classification How an agent tells one arithmetic logic unit from another, and a arithmetic logic unit from things that resemble it.

Recognition comes before every other claim. Without stable identity nothing else in the model can be trusted to be about the same thing twice.

Names and identifiers

The names this thing goes by and the identifiers that survive translation and time.

Preferred name, aliases and local names

Which name to use, which names mean the same thing, and which merely sound similar.

  1. What identifies and describes the name of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the name of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the name of a arithmetic logic unit is known, and what must it refuse? action

Stable identifiers and external keys

Identifiers that keep pointing at this kind of thing across systems and languages.

  1. What identifies and describes an identifier for a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about an identifier for a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once an identifier for a arithmetic logic unit is known, and what must it refuse? action

Classification and granularity

Where a arithmetic logic unit sits among kinds, and how finely a task needs to cut it.

Kind, parents and neighbouring kinds

The classes this thing belongs to and the ones it is next to.

  1. What identifies and describes the kind of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the kind of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the kind of a arithmetic logic unit is known, and what must it refuse? action

Distinguishing features

What separates a arithmetic logic unit from the things most often confused with it.

  1. What identifies and describes what distinguishes a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about what distinguishes a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once what distinguishes a arithmetic logic unit is known, and what must it refuse? action
Form, composition and condition What a arithmetic logic unit is made of, what shape and size it takes, and what state it is in.

A physical thing can be measured, and a model that cannot record its measurements cannot support any decision that depends on them.

Form and dimensions

Shape, size, mass and the ranges these take across examples.

Measurable dimensions and their units

The quantities worth recording and the units they are recorded in.

  1. What identifies and describes the dimensions of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the dimensions of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the dimensions of a arithmetic logic unit is known, and what must it refuse? action

Material and composition

Materials, parts and how they are put together.

Parts and materials

What a arithmetic logic unit is built from and which parts are replaceable.

  1. What identifies and describes the composition of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the composition of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the composition of a arithmetic logic unit is known, and what must it refuse? action

Condition and integrity

Wear, damage, health and the difference between working and broken.

Condition, damage and health

How the condition of a arithmetic logic unit is judged and by whom.

  1. What identifies and describes the condition of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the condition of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the condition of a arithmetic logic unit is known, and what must it refuse? action
Place and movement Where a arithmetic logic unit is, how it got there and where it may go (varies).

A thing that can move needs its position recorded with a time, or every later claim about it is about a place it has left.

Location and placement

Position, containment and the reference frame the position is given in.

Position, container and reference frame

Where a arithmetic logic unit is, and what that position is measured against.

  1. What identifies and describes the location of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the location of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the location of a arithmetic logic unit is known, and what must it refuse? action

Movement and transfer

How a arithmetic logic unit is carried, installed or relocated.

Movement events and constraints

What counts as a movement, what records it and what limits it.

  1. What identifies and describes the movement of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the movement of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the movement of a arithmetic logic unit is known, and what must it refuse? action
State and lifecycle The states a arithmetic logic unit passes through and the events that move it between them.

Most decisions about a thing depend on what state it is in now, which is a claim with a time on it, not a property.

Lifecycle stages

From coming into existence to ceasing to be one of these.

Stages and transitions

The stages worth naming and what moves a arithmetic logic unit between them.

  1. What identifies and describes the lifecycle of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the lifecycle of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the lifecycle of a arithmetic logic unit is known, and what must it refuse? action

Observations and current status

What is observed about a arithmetic logic unit, how often and by whom.

Observation record

How an observation of a arithmetic logic unit is recorded so that it can be superseded rather than overwritten.

  1. What identifies and describes an observation of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about an observation of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once an observation of a arithmetic logic unit is known, and what must it refuse? action
Use and operation What can be done with a arithmetic logic unit and what it takes to do it.

An agent that can recognise a thing but not act on it has only half a model.

Intended use and function

What a arithmetic logic unit is for, and what it is used for anyway.

Function, purpose and misuse

The function a arithmetic logic unit performs and the uses that fall outside it.

  1. What identifies and describes the use of a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the use of a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the use of a arithmetic logic unit is known, and what must it refuse? action

Handling and procedure

The steps, skills and tools involved in using a arithmetic logic unit.

Procedures, skills and required tools

What an agent needs before it can act on a arithmetic logic unit at all.

  1. What identifies and describes handling a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about handling a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once handling a arithmetic logic unit is known, and what must it refuse? action
Definition, dimension and realisation What arithmetic logic unit is defined as and how it is realised in practice.

A unit is not the quantity it measures, and its definition has a history that older data still depends on.

Definition and dimension

The defining relation and the quantity it measures.

Definition, body and date

What defines it now, and what defined it before.

  1. How is arithmetic logic unit defined, by which body, and since when? definition
  2. What was the previous definition, and what data still depends on it? provenance

Conversion and compatibility

Relations to other units, exact or approximate.

Conversions and their exactness

Factors, and whether each is exact by definition.

  1. What conversions relate arithmetic logic unit to other units, and which are exact by definition? measurement
  2. Where does rounding a conversion change a decision, and how should that be recorded? action
Provenance, evidence and time Where every claim about a arithmetic logic unit came from and when it held.

A claim without a source and a time cannot be superseded, only overwritten, and an agent that overwrites loses the ability to explain itself.

Source and authority

Who said it, on what evidence, and how strongly.

Claim provenance and confidence

The authority behind each claim about a arithmetic logic unit and how confident it is.

  1. What identifies and describes a claim about a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about a claim about a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once a claim about a arithmetic logic unit is known, and what must it refuse? action

Time, versions and supersession

When a claim was true, when it was learnt, and what replaced it.

Validity period and supersession

How an old claim about a arithmetic logic unit is retired without being erased.

  1. What identifies and describes the validity of a claim about a arithmetic logic unit, and in what units or vocabulary? definition
  2. Who or what asserted this about the validity of a claim about a arithmetic logic unit, by which method, and when was it true? provenance
  3. What may an agent decide or do once the validity of a claim about a arithmetic logic unit is known, and what must it refuse? action

What the second pass must settle

  • Which of the bundles below does a real task actually need, and which are ceremony?
  • What does this thing have that the facets do not capture at all?
  • Which neighbouring kind is most often confused with a arithmetic logic unit, and on what evidence are they told apart?