Home › Entities › practices › IBM 2821 Control Unit

IBM 2821 Control Unit

control unit used to attach card readers, card punches and line printers to IBM System/360 and System/370 mainframe computers
class practices Q5968614
Press Enter · cited answer in seconds

IBM 2821 Control Unit

Summary

IBM 2821 Control Unit draws 6 Wikipedia views per month (practices category, ranking #213 of 764).[1]

Key Facts

  • IBM 2821 Control Unit's subclass of is recorded as peripheral[2].
  • IBM 2821 Control Unit's designed by is recorded as IBM[3].
  • IBM 2821 Control Unit's Commons category is recorded as IBM 2821[4].
  • IBM 2821 Control Unit's Freebase ID is recorded as /m/07s3bq9[5].

Why It Matters

IBM 2821 Control Unit draws 6 Wikipedia views per month (practices category, ranking #213 of 764).[1]

Related Entities

IBM peripheral

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.

Aggregate / graph-position facts

  1. [1] ↑ . Wikimedia Foundation. dumps.wikimedia.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). IBM 2821 Control Unit. Retrieved March 18, 2026, from https://4ort.xyz/entity/ibm-2821-control-unit
MLA “IBM 2821 Control Unit.” 4ort.xyz Knowledge Graph, 4ort.xyz, 18 Mar. 2026, https://4ort.xyz/entity/ibm-2821-control-unit.
BibTeX @misc{4ortxyz_ibm-2821-control-unit_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{IBM 2821 Control Unit}}, year = {2026}, url = {https://4ort.xyz/entity/ibm-2821-control-unit}, note = {Accessed: 2026-03-18}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): IBM 2821 Control Unit — https://4ort.xyz/entity/ibm-2821-control-unit (retrieved 2026-03-18)

Canonical URL: https://4ort.xyz/entity/ibm-2821-control-unit · Last refreshed: