Scheutz invents the printing calculator
Per Georg Scheutz (September 23, 1785 - May 22, 1873) was a Swedish lawyer, translator, and inventor.
Inspired by Charles Babbage's difference engine, Scheutz and his son Edvard Scheutz (1821-1881), invented the Scheutz calculator. This device computed tabular differences and printed the results.
Work on the machine started in 1837 and finished in 1843.
The Scheutz calculator is significant because it was the first machine that performed calculations and then retained the results in printed form.