Casio
multinational electronics manufacturing company
Casio Computer Co., Ltd. (カシオ計算機株式会社, Kashio Keisanki Kabushiki-gaisha) is a Japanese multinational electronics manufacturer headquartered in Shibuya, Tokyo. Its principal products include watches, clocks, calculators, electronic dictionaries, label printers and electronic musical instruments. In the fiscal year ended 31 March 2026, Casio reported consolidated net sales of ¥276.267 billion, of which ¥184.966 billion was generated by its Timepieces segment.
The business originated in 1946, when Tadao Kashio established the workshop Kashio Seisakujo. Casio Computer Co., Ltd. was incorporated in 1957 after Tadao and his younger brothers Toshio, Kazuo and Yukio developed the relay-based 14-A calculator. The Information Processing Society of Japan describes the 14-A as the first commercial relay-based calculator, while Casio describes it as the world's first compact all-electric calculator.
Casio subsequently expanded from office calculators into personal calculators, watches, electronic musical instruments and other consumer electronics. Products associated with its development include the Casio Mini calculator, the Casiotron digital watch, the G-Shock watch range, the Casiotone keyboard line and the QV-10 digital camera.
This brief starts where responsible research should: with the source description of “Casio” as multinational electronics manufacturing company. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the history & society register because the source frames it as multinational electronics manufacturing company. Its deeper value depends on whether names, dates, institutions and citations support that framing.
The record creator and administrative purpose are central evidence, because official documentation reflects both action and institutional priorities. The source revision retrieved here is dated Sep 20, 2026. The linked authority identifier is Q217338. VIAF identifies the subject as 148926012. The Library of Congress control number is n80140207. 3 of 6 selected statements include explicit references; 3 carry qualifiers and 1 use preferred rank. The first chronological checks are 2026, 1946 and 1957.
Later summaries often reconcile disputed chronology or motive more neatly than the contemporary record permits. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Compare institutional narratives with records created by participants and affected communities. Dates and formal titles are useful anchors, but not substitutes for context.
- Event chronology
- Institutional context
- Locating named record creators
Contemporary correspondence, government or organizational records, oral histories and cited historical scholarship.
Three-step research path
- Establish the record: confirm the title “Casio”, its source revision and the description used here.
- Expand the search: follow Casio primary sources, Casio archive and Casio research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Casio”?
- Which voices are present, absent or mediated by the institution?
- Who created the surviving record, and for what administrative purpose?
Search terms from this dossier
This entry incorporates text from “Casio” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.