THE WAY TO THE FIRST AUTOMATIC SEQUENCE-CONTROLLED CALCULATOR - THE 1935 DEHOMAG-D11 TABULATOR

This article was written with the intention of throwing same light upo n the development of the Hollerith Electric Tabulating System, which u ltimately resulted in the first automatic sequence-controlled printing calculator, the DEHOMAG D 11 tabulator. The story of this particular machine,is important in the general history of tabulating equipment, y et it has not been told before. Although this article is based upon a larger technical report, of which other parts are intended for later p ublication, it cannot be said to be the last word on this machine. Bas ic material about the device continues to be collected, and every item leads to further insights.