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Acceptable daily intake or ADI is a measure of the amount of a specific substance (originally applied for a food additive, later also for a residue of a veterinary drug or pesticide) in food or drinking water that can be ingested (orally) daily over a lifetime without an appreciable health risk. [1]
The World Health Organization (WHO) has introduced a TDI for melamine as 0.2 milligrams (mg)/kg body weight (b.w.) as of 2008. [5] Similarly the established TDI range for dioxin according to WHO is 1-4 picograms toxic equivalency/kg body weight as of 1998. [6]
A simple arithmetic calculator was first included with Windows 1.0. [5]In Windows 3.0, a scientific mode was added, which included exponents and roots, logarithms, factorial-based functions, trigonometry (supports radian, degree and gradians angles), base conversions (2, 8, 10, 16), logic operations, statistical functions such as single variable statistics and linear regression.
Pascaline (also known as the arithmetic machine or Pascal's calculator) is a mechanical calculator invented by Blaise Pascal in 1642. Pascal was led to develop a calculator by the laborious arithmetical calculations required by his father's work as the supervisor of taxes in Rouen . [ 2 ]
The Electronic Delay Storage Automatic Calculator (EDSAC) was an early British computer. [1] Inspired by John von Neumann 's seminal First Draft of a Report on the EDVAC , the machine was constructed by Maurice Wilkes and his team at the University of Cambridge Mathematical Laboratory in England.