Hello Everyone, 

An abacus, also called a counting frame, is a calculating tool used primarily by Asians for performing arithmetic processes.

As a low vision person, for many, many years (before the invention of talking calculators) I used the abacus as my primary computing device.  In fact, I still consider myself an intermediate to advanced user of this very ancient and very honorable counting tool.

Click Here to learn about the history of what is considered, by many, to be the world’s first computer.

Enjoy,

Mark