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The suanpan (simplified Chinese: 算盘; traditional Chinese: 算盤; pinyin: suànpán), also spelled suan pan or souanpan [1] [2]) is an abacus of Chinese origin, earliest first known written documentation of the Chinese abacus dates to the 2nd century BCE during the Han dynasty, and later, described in a 190 CE book of the Eastern Han ...
Here thus in the history of equations the first letters of the alphabet became indicatively known as coefficients, while the last letters as unknown terms (an incerti ordinis). In algebraic geometry , again, a similar rule was to be observed: the last letters of the alphabet came to denote the variable or current coordinates .
An abacus (pl. abaci or abacuses), also called a counting frame, is a hand-operated calculating tool which was used from ancient times in the ancient Near East, Europe, China, and Russia, until the adoption of the Hindu–Arabic numeral system. [1] An abacus consists of a two-dimensional array of slidable beads (or similar objects). In their ...
A suanpan (top) and a soroban (bottom). The two abaci seen here are of standard size and have thirteen rods each. Another variant of soroban. The soroban is composed of an odd number of columns or rods, each having beads: one separate bead having a value of five, called go-dama (五玉, ごだま, "five-bead") and four beads each having a value of one, called ichi-dama (一玉, いちだま ...
Of prime importance, he specifically notes the formats of the semuncia, sicilicus and sextula as used on the Roman bronze abacus, "auf dem chernan abacus". The semuncia is the symbol resembling a capital "S", but he also includes the symbol that resembles a numeral three with horizontal line at the top, the whole rotated 180 degrees.
算盤 or 算盘 is an East Asian abacus, and may refer to: Suanpan, an abacus of Chinese origin; Soroban, an abacus developed in Japan, and derived from the suanpan
Abacus seeds (Chinese: 算盘子) or abacus beads is a Hakka Chinese dish consisting of dimpled, disc-shaped dumplings made with taro and tapioca flour. The dumplings are boiled then stir-fried with minced pork, shiitake or wood ear mushrooms , dried shrimp , dried cuttlefish and firm bean curd .
The suanpan (Chinese abacus) can be used to perform hexadecimal calculations such as additions and subtractions. [22] South Asian monetary systems were base-16. One rupee in Pakistan and India was divided into 16 annay. A single anna was subdivided into four paisa or twelve pies (thus there were 64 paise or 192 pies in a rupee).