Schickard calculating clock

E809516

The Schickard calculating clock was an early 17th-century mechanical calculator designed by Wilhelm Schickard, often regarded as one of the first known attempts to build an automatic computing machine.

All labels observed (2)

How this entity was disambiguated

Statements (45)

Predicate Object
instanceOf early computing machine ⓘ
mechanical calculator ⓘ
alsoKnownAs Rechen Uhr ⓘ
Schickard’s calculating clock ⓘ
causeOfDestruction fire ⓘ
computationalMethod digit-wise mechanical addition ⓘ
mechanical carry propagation ⓘ
computes addition ⓘ
subtraction ⓘ
countryOfOrigin Duchy of Württemberg ⓘ
designedFor reducing computational labor ⓘ
designer Wilhelm Schickard ⓘ
documentedIn correspondence with Johannes Kepler ⓘ
era Scientific Revolution ⓘ
field history of computing ⓘ
mechanical engineering ⓘ
followedBy Leibniz calculator ⓘ
Pascaline ⓘ
hasComponent carry mechanism wheels ⓘ
display windows ⓘ
input dials ⓘ
hasFeature Napier’s bones integration ⓘ
automatic carry mechanism ⓘ
gear-based mechanism ⓘ
historicalSignificance early attempt at automatic computation ⓘ
one of the first known mechanical calculators ⓘ
inception 1623 ⓘ
early 17th century ⓘ
influenced later mechanical calculators ⓘ
intendedUser Johannes Kepler ⓘ
languageOfOriginalName German ⓘ
locatedInPresentDay Germany ⓘ
material metal gears ⓘ
wood ⓘ
notableAs precursor of modern calculators ⓘ
numberOfDigits 6 ⓘ
powerSource manual hand operation ⓘ
precededBy manual calculation methods ⓘ
reconstructed 20th century ⓘ
reconstructionBasedOn Schickard’s letters ⓘ
historical drawings ⓘ
status original devices destroyed ⓘ
useCase astronomical calculations ⓘ
uses decimal number system ⓘ
rotating gears ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Wilhelm Schickard → notableWork → Schickard calculating clock ⓘ
Schickard calculating clock → alsoKnownAs → Schickard’s calculating clock ⓘ
linked to: Schickard calculating clock