Footnote [6]:
A few years later when I went back to Japan, I mentioned my use of electronic computer to one of my friends. Our discussions did not match well for a while, since he was thinking of electro-mechanical calculator, instead of electronic computer.

Japanese technology always lags several years behind the U.S. -- and the gap is now getting wider especially in the age of information and knowledge, and this trend will never be reversed due to their culture and tradition -- more later.