Sinclair ZX81

home computer produced by Sinclair Research
Place computer_model Q263250
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Sinclair ZX81

Summary

Sinclair ZX81 is a computer model[1]. It ranks in the top 6% of computer_model entities by monthly Wikipedia readership (446 views/month).[2]

Key Facts

  • Sinclair ZX81's image is recorded as Sinclair-ZX81.png[3].
  • Sinclair ZX81's instance of is recorded as computer model[4].
  • Sinclair ZX81's follows is recorded as Sinclair ZX80[5].
  • Sinclair ZX81's followed by is recorded as ZX Spectrum[6].
  • Sinclair ZX81's manufacturer is recorded as Timex Group USA[7].
  • Sinclair ZX81's developer is recorded as Sinclair Research[8].
  • Sinclair ZX81's GND ID is recorded as 4068310-2[9].
  • Sinclair ZX81's Library of Congress authority ID is recorded as sh85122794[10].
  • Sinclair ZX81's subclass of is recorded as home computer[11].
  • Sinclair ZX81's operating system is recorded as Sinclair BASIC[12].
  • Sinclair ZX81's Commons category is recorded as Sinclair ZX81[13].
  • +1981-03-05T00:00:00Z marks the founding of Sinclair ZX81[14].
  • Sinclair ZX81's publication date is recorded as +1981-00-00T00:00:00Z[15].
  • Sinclair ZX81's Freebase ID is recorded as /m/089dw[16].
  • Sinclair ZX81's Internet Archive ID is recorded as Sinclair_ZX81_TOSEC_2012_04_23[17].
  • Sinclair ZX81's service retirement is recorded as +1984-00-00T00:00:00Z[18].
  • Sinclair ZX81's CPU is recorded as Zilog Z80A[19].
  • Sinclair ZX81's Stack Exchange tag is recorded as https://stackoverflow.com/tags/zx81[20].
  • Sinclair ZX81's mass is recorded as {'unit': 'Q41803', 'amount': '+350'}[21].
  • Sinclair ZX81's price is recorded as {'unit': 'Q184172', 'amount': '+490'}[22].
  • Sinclair ZX81's units sold is recorded as {'amount': '+1500000'}[23].
  • Sinclair ZX81's discontinuation date is recorded as +1984-00-00T00:00:00Z[24].
  • Sinclair ZX81's Open Library subject ID is recorded as sinclair_zx81_(computer)[25].
  • Sinclair ZX81's Gaming-History ID is recorded as 72690[26].
  • Sinclair ZX81's Internet Game Database platform ID is recorded as sinclair-zx81[27].

Body

Designation and Status

Sinclair ZX81's instance of is recorded as computer model[4].

History and Context

+1981-03-05T00:00:00Z marks the founding of Sinclair ZX81[14].

Why It Matters

Sinclair ZX81 ranks in the top 6% of computer_model entities by monthly Wikipedia readership (446 views/month).[2] It has Wikipedia articles in 20 language editions, a strong signal of global cultural recognition.[28] It is known by 5 alternative names across languages and contexts.[29]

References

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

Direct Wikidata claims

  1. [3] . wikidata.org.
  2. [4] . wikidata.org.
  3. [5] . wikidata.org.
  4. [6] . wikidata.org.
  5. [7] . wikidata.org.
  6. [8] . wikidata.org.
  7. [9] . wikidata.org.
  8. [10] . wikidata.org.
  9. [11] . wikidata.org.
  10. [12] . wikidata.org.
  11. [13] . wikidata.org.
  12. [14] . wikidata.org.
  13. [15] . wikidata.org.
  14. [16] . Freebase Data Dumps. wikidata.org.
  15. [17] . wikidata.org.
  16. [18] . wikidata.org.
  17. [19] . wikidata.org.
  18. [20] . wikidata.org.
  19. [21] . wikidata.org.
  20. [22] . wikidata.org.
  21. [23] . wikidata.org.
  22. [24] . wikidata.org.
  23. [25] . wikidata.org.
  24. [26] . wikidata.org.
  25. [27] . wikidata.org.

Class ancestry

  1. [1] . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] . Wikimedia Foundation. dumps.wikimedia.org.
  2. [28] . Wikidata sitelinks. wikidata.org.
  3. [29] . Wikidata aliases. 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). Sinclair ZX81. Retrieved May 3, 2026, from https://4ort.xyz/entity/sinclair-zx81
MLA “Sinclair ZX81.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/sinclair-zx81.
BibTeX @misc{4ortxyz_sinclair-zx81_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Sinclair ZX81}}, year = {2026}, url = {https://4ort.xyz/entity/sinclair-zx81}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Sinclair ZX81 — https://4ort.xyz/entity/sinclair-zx81 (retrieved 2026-05-03)

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