Search results
Results from the WOW.Com Content Network
The University of Michigan (U-M, UMich, or Michigan) is a public research university in Ann Arbor, Michigan, United States. Founded in 1817, it is the oldest institution of higher education in the state.
V.P.A.M. is an infix system for entering mathematical expressions, used by Casio in most of its current scientific calculators. In the infix notation the precedence of mathematical operators is taken into account. According to Casio, in V.P.A.M. calculations can be input exactly as they are normally written.
The TI-59 is an early programmable calculator, that was manufactured by Texas Instruments from 1977. It is the successor to the TI SR-52, quadrupling the number of "program steps" of storage, and adding "ROM Program Modules" (an insertable ROM chip, capable of holding 5000 program steps).
Was the first scientific calculator to fly in space in 1973. [5] HP-35 calculators were carried on the Skylab 3 and Skylab 4 flights, between July 1973 and February 1974. [6] Is the first pocket calculator with a numeric range that covered 200 decades (more precise 199, ±10 ±99). [5]
The TI-108 is a simple four-function calculator which uses single-step execution.. The immediate execution mode of operation (also known as single-step, algebraic entry system (AES) [7] or chain calculation mode) is commonly employed on most general-purpose calculators.
In 1872, Frank S. Baldwin in the U.S. invented a pinwheel calculator. In 1877 George B. Grant of Boston in the United States began producing the Grant mechanical calculating machine capable of addition, subtraction, multiplication and division. [83] The machine measured 13x5x7 inches and contained eighty working pieces made of brass and ...
A partially disassembled Curta calculator, showing the digit slides and the stepped drum behind them Curta Type I calculator, top view Curta Type I calculator, bottom view. The Curta is a hand-held mechanical calculator designed by Curt Herzstark. [1] It is known for its extremely compact design: a small cylinder that fits in the palm of the hand.
U.S. patent 4,001,566 – Floating Point Calculator With RAM Shift Register – 1977 (originally filed GB March 1971, US July 1971), very early single chip calculator claim. U.S. patent 5,623,433 – Extended Numerical Keyboard with Structured Data-Entry Capability – J. H. Redin, 1997 (originally filed 1996), Usage of Verbal Numerals as a way ...