Grant’s difference engine was invented in 1876 by George Grant. It was a calculating machine and was invented as a way to advance the current calculating machine technology. It used the latest design ...

Difference Engine A numerical table is a tool designed to save the time and labor of those engaged in computing work. The oldest tables which are preserved, were compiled in Babylon in the period 1800 ...

A note on the value of money in the nineteenth century -- pt. 1. The difference engine -- ch. 1. The tables crisis -- ch. 2. A personal question -- ch. 3. Tragedy and decline -- ch. 4. Miracles and ...