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A number of units of measurement were used in the Philippines to measure various quantities including mass, area, and capacity. The metric system has been compulsory in the country since 1860, during the late Spanish colonial period. [1]
A stone is a former unit used in Hong Kong equal to 120 catties and a gwan (鈞) is 30 catties. Catty or kati is still used in Southeast Asia as a unit of measurement in some contexts especially by the significant Overseas Chinese populations across the region, particularly in Malaysia and Singapore.
The stone or stone weight (abbreviation: st.) [1] is an English and British imperial unit of mass equal to 14 avoirdupois pounds (6.35 kg). [ nb 1 ] The stone continues in customary use in the United Kingdom and Ireland for body weight .
Various references from the same period describe it as a unit of mass: for rice, 133 lb (about 60.33 kg); for cocoa, 83.5 lb, (about 37.87 kg) one source says on the average 60 kg for rice and 38 kg for cacao [5]). Other sources claim it was the equivalent of 58.2 kg.
The tube technology of the ANITA was superseded in June 1963 by the U.S. manufactured Friden EC-130, which had an all-transistor design, a stack of four 13-digit numbers displayed on a 5-inch (13 cm) cathode-ray tube (CRT), and introduced Reverse Polish Notation (RPN) to the calculator market for a price of $2200, which was about three times ...
It cost US$395 (about £165), but despite the price, over 300,000 were sold in the three and a half years for which it was produced. [ 1 ] [ 2 ] From 1971, Texas Instruments had been making available the building block for a simple calculator on a single chip [ 3 ] and the TMS0803 chipset appeared in a number of Sinclair calculators.
Among other known ancient Irish stones are the Aughrim Graveyard Stone which weighs 115 kg (254 lb) and meant to be shouldered, the Faha Stones which are a pair weighing 162 kg (357 lb) and 112 kg (247 lb), and the 215 kg (474 lb) Flag of Denn, which is a heavy, almost perfectly rectangular stone associated with strong men of the parish who ...
The first half of the 20th century saw the gradual development of the mechanical calculator mechanism. The Dalton adding-listing machine introduced in 1902 was the first of its type to use only ten keys, and became the first of many different models of "10-key add-listers" manufactured by many companies.