16 (number) old days, weighing was done with a beam balance to make equal splits. It would be easier to split a heap of grains into sixteen equal parts through successive divisions than to split into ten parts. Chinese Taoists did finger computation on the trigrams and hexagrams by counting the finger tips and joints of the fingers with the tip of the thumb. Each hand can count up to 16 in such manner. The Chinese abacus uses two upper beads to represent the 5s and 5 lower beads to represent the 1s, the 7 beads can represent a hexadecimal digit from
One hand typing One hand typing The idea of one-hand typing is to touch type using only one hand (e.g. the left one), or mainly one hand. Its history and application are closely related to keyboard research on QWERTY and Dvorak Simplified Keyboard. Typing with one hand can be done in a number of ways, and novel approaches are still emerging. People handle this situation in different ways and the solution depends on whether it is necessitated by a temporary condition, as well as the pupil's physical abilities, muscle strength, and cognition and memory. Therefore, existing approaches may fit different expectations. One-handed typing