or the Ishango Bone:<quoted text>
Well, to begin with.
The Lebombo Bone
The first ever computing devises used are believed to be found around 35,000 BC.
Archeologists while excavating within the Border Cave in the Lebombo Mountains of Swaziland, discovered and important artifact. It was a small piece of the fibula bone, known as the Lebombo bone, you can guess where the name of the bone came from. It was named after the Lebombo Mountains.
This piece of fibula bone consisted of 29 distinct notches that were deliberately carved into a baboons fibula bone. The Lebombo bone is the oldest known mathematical artifact ever discovered.
There are no clear indications that they were used for computing at that period. It could be assumed that they may have been used in some sort of counting or to keep track of calendar. There are clear indications as the Lebombo bone resembles to the calendar sticks still used by Bushmen in Namibia.
Dirk Huylebrouck, the Mathematical Tourist columnist in the Mathematical Intelligencer, tells us about the remarkable Ishango bone, a 22,000 year old arithmetical exercise!
"Some say that the Ishango Bone is the oldest table of prime numbers."