Rabdologiae seu numerationis per virgulas libri duo: cum appendice de expeditissimo multiplicationis promptuario. Quibus accessit & arithmeticae localis liber unus. Leiden: Petrus Rammasenius, 1628 [NAPIER’S BONE OR RODS, THE 1ST CALCULATING MACHINES]
Leiden: Petrus Rammasenius, 1628. 3rd Edition. THIRD EDITION OF THE INVENTION & DESCRIPTION OF NAPIER’S BONES, THE 1st CALCULATING MACHINES & THE “PRECURSORS OF SEVENTEENTH-CENTURY AND MODERN CALCULATING MACHINES AND COMPUTERS” (Printing and the Mind of Man 116). Napier’s invention, essentially a system of rods, offered a mechanical means for..... More