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Hexadecimal finger-counting scheme
Hexadecimal finger-counting scheme
The programmable RPN-calculator HP-16C Computer Scientist from 1982 was designed for programmers. One of its key features was the conversion between d
The programmable RPN-calculator HP-16C Computer Scientist from 1982 was designed for programmers. One of its key features was the conversion between different numeral systems (note hex number in display).
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Ten digits on two hands, the possible origin of decimal counting
Ten digits on two hands, the possible origin of decimal counting
Diagram of the world's earliest known multiplica­tion table (c. 305 BCE) from the Warring States period
Diagram of the world's earliest known multiplica­tion table (c. 305 BCE) from the Warring States period
The world's earliest decimal multiplication table was made from bamboo slips, dating from 305 BCE, during the Warring States period in China.
The world's earliest decimal multiplication table was made from bamboo slips, dating from 305 BCE, during the Warring States period in China.
counting rod decimal fraction 1/7
counting rod decimal fraction 1/7