What calculator was invented in Japan 1970?

Portable Calculators of 1970

The inaugural wave of commercially available portable calculators emerged from Japan in 1970, quickly reaching global markets. Among these groundbreaking devices were the Sanyo ICC-0081, also known as the "Mini Calculator," the Canon Pocketronic, and the Sharp QT-8B, branded as the "micro Compet." Notably, the Canon Pocketronic was a product stemming from the Cal-Tech initiative.