given a stack of punched cards encoding transactions, they produced a ledger
The grid lines on the visualization represent a tree structure underneath. Every region is a node. When a node splits, it creates four children. The root node covers the entire space. Leaf nodes (nodes with no children) hold the actual points.
，这一点在WPS官方版本下载中也有详细论述
Updated Category: Information Technology
Up to 10 simultaneous connections