Home 1 
3 
Survivor Library: Sliderules and Abacus (45 )
Slide Rule Emulators — a collection of online slide rule emulator replicas.Soroban Exam — explains how to use and generates exams to help you improve at the Japanese abacus, the soroban.
Why everyone should learn the slide rule (Scott Locklin)Library of Chadnet | wiki.chadnet.org