Analysis of information sources in references of the Wikipedia article "易经的影响" in Chinese language version.
It was much like an ordinary pocket calculator, except that the LCD screen was a little larger than usual in order to accommodate the abridged judgments of King Wen on each of the sixty-four hexagrams, and also the commentaries of his son, the Duke of Chou, on each of the lines of each hexagram. These were unusual text to see marching across the display of a pocket calculator, particularly as they had been translated from the Chinese via the Japanese and seemed to have enjoyed many adventures on the way.
