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Casio fx-991EX

advanced scientific calculator with 552 functions and natural textbook display
Thing classwiz Q48827880
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Casio fx-991EX

Summary

Casio fx-991EX is a Classwiz[1].

Key Facts

  • Casio fx-991EX's instance of is recorded as Classwiz[2].
  • Casio fx-991EX's instance of is recorded as calculator model[3].
  • Casio fx-991EX's manufacturer is recorded as Casio[4].
  • Casio fx-991EX's Commons category is recorded as Casio fx-991EX[5].
  • Casio fx-991EX's language of work or name is recorded as English[6].
  • 2015 marks the founding of Casio fx-991EX[7].
  • Casio fx-991EX was released on 2015[8].
  • Casio fx-991EX's source of energy is recorded as solar cell[9].
  • Casio fx-991EX's source of energy is recorded as LR44 batteries[10].
  • Casio fx-991EX's described at URL is recorded as http://edu.casio.com/products/cwiz/fx991ex/[11].
  • Casio fx-991EX's length is recorded as {'unit': 'http://www.wikidata.org/entity/Q174789', 'amount': '+165.5'}[12].
  • Casio fx-991EX's height is recorded as {'unit': 'http://www.wikidata.org/entity/Q174789', 'amount': '+11.1'}[13].
  • Casio fx-991EX's width is recorded as {'unit': 'http://www.wikidata.org/entity/Q174789', 'amount': '+77'}[14].
  • Casio fx-991EX's mass is recorded as {'unit': 'http://www.wikidata.org/entity/Q41803', 'amount': '+90'}[15].
  • Casio fx-991EX's user manual URL is recorded as http://support.casio.com/storage/pt/manual/pdf/EN/004/fx-570_991EX_EN.pdf[16].
  • Casio fx-991EX's model number is recorded as fx-991EX[17].

Body

Definition and Type

Recorded instance of include Classwiz[2] and calculator model[3].

Origins

2015 marks the founding of Casio fx-991EX[7].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [2] ↑ . wikidata.org.
  2. [3] ↑ . wikidata.org.
  3. [4] ↑ . wikidata.org.
  4. [5] ↑ . wikidata.org.
  5. [6] ↑ . wikidata.org.
  6. [7] ↑ . wikidata.org.
  7. [8] ↑ . casio.com. casio.com. Provenance: wikidata.org.
  8. [9] ↑ . wikidata.org.
  9. [10] ↑ . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . wikidata.org.
  12. [13] ↑ . wikidata.org.
  13. [14] ↑ . wikidata.org.
  14. [15] ↑ . wikidata.org.
  15. [16] ↑ . wikidata.org.
  16. [17] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Casio fx-991EX. Retrieved May 3, 2026, from https://4ort.xyz/entity/casio-fx-991ex
MLA “Casio fx-991EX.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/casio-fx-991ex.
BibTeX @misc{4ortxyz_casio-fx-991ex_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Casio fx-991EX}}, year = {2026}, url = {https://4ort.xyz/entity/casio-fx-991ex}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Casio fx-991EX — https://4ort.xyz/entity/casio-fx-991ex (retrieved 2026-05-03)

Canonical URL: https://4ort.xyz/entity/casio-fx-991ex · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 20d ago · Peter F. Patel-Schneider · 2026-08-21 view diff on Wikidata ↗
    Model number → fx-991EX
    Width → {'unit': 'http://www.wikidata.org/entity/Q174789', 'amount':
    Imported from → —
    Commons category → Casio fx-991EX
    + 14 other properties edited (see Wikidata diff for full list)
    "/* wbremoveclaims-remove:1| */ [[Property:P31]]: [[Q48835439]], #quickstatements; #temporary_batch_1787334865712; make product models not be physical objects"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.