This issue contains

• 400 years of calculating machines: Schickard, Pascal and their successors
• 400 years of calculating machines: from the cabinet of curiosities to the engineering office
• ChatGPT about the history of the development of calculating machines
• Schickard 1623 - 1973 - 2023: Postage stamps, first-day letters, special coin editions and medals
• Photo Album "400 Years of Calculating Machines"
• The "do-all girl" – restoration of a Faktotum Mod. 2
• Adding machine - braked - Patent by Otto Pütter & Benno Schmitz from Solingen (1877)

This issue contains:

• Official invitation to the Annual General Meeting 2023 of IFHB e.V.
• New board candidates introduce themselves
• The IFHB meets at the Heimatverein Hoffenheim
• A small mechanical calculator for the binary number system
• Ballistic trajectory
• Covered Conti
• Odhner display model on rechnerlexikon.de

This issue contains

• Interest rates, interest calculators and an unusual find from Sweden
• Olympia Musicwriter - New addition to my collection
• Mercedes-Addelektra bookkeeping machine – bridge builder between areas of collecting (Part II)
• The unfortunate Olympia 1011 - How a good idea became a huge flop
• Britannic – small calculator with large capacity / Calculating in Pounds sterling
• On collecting in post-industrial capitalism
• Adler 7 with device for spaced writing

This issue contains:

• Report on the Collector Meeting in HNF on 3 June 2023
• Real Communication Makes Noise ...
• Arithmeum Open Day: Special Exhibition 400 Years of Calculating Machines
• Solution of the physics problem from HBw-Aktuell 05/2023
• Stenographers' Association 1925 Treysa e. V. Opens Another Museum Room
• Flea Market Find: PEZ Arithmetic
• At the Everything Collectors in Palazzolo

This issue contains:

• Curt Herzstark Memorial Meeting in Mauren, Liechtenstein
• Math Today and for 400 Years
• Little Effort - Large Audience
• Event on 14.09. in Tübingen on Schickard
• Olympia Calculating Machine Museum (ORM)
  - historical technology in a modern guise
• The Teeth of Time
• Erhard Anthes on his 80th Birthday