原始的计算工具计算是人类的一种思维活动,人类初期的计算主要是计数.最早用来帮助计数的工具是人类的四肢(手、脚、手指、脚趾)或身边的小石头、贝壳、绳子等.中国有句古话叫“屈指可数”,说明人们常用手指来计算简单的数. The original computational tool calculation is a human thinking activity. The initial computation of human beings is mainly counting. The earliest tools to help count are human limbs (hands, feet, fingers, toes) or small stones, shells, ropes around them. Etc. There is an old saying in China called “a handful of fingers,” indicating that people use their fingers to calculate simple numbers.