33
/pt/
AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
November 1, 2025
1030390
316207
2
Create a timeline
Public Timelines
For educational institutions For teachers For students Cabinet
For educational institutions For teachers For students Open cabinet
FAQ Receber premium
Create a timeline
Public timelines
FAQ
About & FeedbackAcordoPrivacidadeFAQ
Support 24/7  
CabinetGet premium
Donate

The mechanical calculator (7 h 50 m, 18 nov 2018 ano – 20 h 53 m, 30 jul 2019 ano)

Descrição:

The mechanical calculator then invented by Thomas de Colmar in the mid-nineteenth century, and subsequent others. It was called the Arithmometer. The concept was improved with pinwheel calculators invented by Baldwin and Odhner.

Adicionado na linha do tempo:

Counting/Caculating Inventions

ByEmily Stark
4 nov 2019
0
0
360

Data:

7 h 50 m, 18 nov 2018 ano
20 h 53 m, 30 jul 2019 ano
~ 8 months
About & FeedbackAcordoPrivacidadeFAQ
Support 24/7  
CabinetGet premium
Donate
The service accepts bank transfer (ACH, Wire) or cards (Visa, MasterCard, etc). Processed by Stripe.
Secured with SSL