Casio fx-82B
Brief History
The competitors offered wider and wider range of cheaper scientific calculators, so Casio had to develop a new model with features only used in more expensive calculators. In 1987, the fx-82B was announced, and it had a new 8+2 digit display, which can be freely set to fixed point or scientific mode, and had hyperbolic functions too. The sliding switch replaced by soft-key power mechanism was a novelty. Due to competition, a new model is announced in every year.
Manufacturer: | CASIO Computer Co., Ltd. (Japan) |
Mfg. date: | 1987-88 |
Size: | 7,5×15,2×2 cm |
Weight (ready for operate): | n.a. |
Type: | scientific |
Capacity: | 8/8+2 digits (input/display) 11+2 digits (internal precision) |
Operating logic: | algebraic |
CPU: | NEC D1014G |
Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 6 bracket (with saving the pending operation) 1 memory (with aritmetic) |
Features: | %calculation with percent +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0-7) Sciscientific (exponential) notation Engengineering notation Sqrsquare root x2square pivalue of pi (3.1415..) can be recalled 1/xreciprocal trigtrigonometrical functions (sin, cos, tan and inverses: arcsin, arccos, arctan) hyphyperbolic functions (sinh, cosh, tanh and inverses: ar sinh, ar cosh, ar tanh) DMS-DDconversion of decimal and sexagesimal numbers logexponential and logarithmical functions (10- and e-base) yxraising to power SDone variable statistics: calculating mean and standard deviation P-Rconverting coordinates between rectangular and polar systems n!factorial |
Display: | 8+2 digit LCD |
Power: | 2×AA-type battery |
Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.000018398 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.0068804292E-70 |
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