Pre 1950 computing

Slide rules – Fuller cylindrical, Hemi, circular, special purpose etc
Calculating aids – Tamaya Planix 5000 planimeter
Mechanical Calculators – 1930s Comptometer, Curta, Contex, Facit, Odhner
Electrical calculators – 1930 NCR Accounting Machine, National etc
Hand card punch
Powers Samas card punch
Powers Samas card sorter
Teletype Model 15, two models [originally telex/telegram usage]

  • January 12, 2019