The document discusses Kaoru Ishikawa's development of the Seven Basic Tools of Quality Control. Ishikawa was inspired by W. Edwards Deming's lectures on quality control tools in Japan in the 1950s. Ishikawa formalized seven graphical tools - including fishbone diagrams, histograms, Pareto charts, flowcharts, scatter plots, run charts, and control charts - that could be easily understood and applied by all workers to solve 95% of quality-related problems. The tools provide visual means to analyze processes, identify issues, and monitor quality improvements.