Casio fx-82TL
Brief History
The Sharp's EL-5100 announced in 1979 defined the goal has to be achieved by scientific calculators in the next years. The widely used calculators with algebraic logic perform operations as soon as possible, but formula-interpreting ones start calculation only when the operator pressed the appropriate key. This kind of logic allows algebraic expressions keyed in as written on paper. This technology was only adapted to cheapest calculator families in the second half of 1990s: Casio's advanced VPAM (Visually Perfect Algebraic Method) system first appeared in 1997 with the new fx-82W, which was replaced in 1997 with the S-VPAM (Super-VPAM) fx-82TL. Both of them uses two-line LCD display, has replay function to easily edit or correct the entered expressions. The memories are increased to 9. This model was in production to 2001, when it was replaced with the fx-82MS.
| Manufacturer: | CASIO Computer Co., Ltd. (Japan/China) |
| Mfg. date: | 1998-2001 |
| Size: | 7,5×16,2×1,9 cm |
| Weight (ready for operate): | n.a. |
| Type: | scientific |
| Capacity: | - digits (input) 10/10+2 digits (display) 12+2 digits (internal precision) |
| Operating logic: | formula-interpreting |
| Registers: | 10 standard (with saving the pending operation) 24 bracket (with saving the pending operation) 9 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0-9) Sciscientific (exponential) notation Engengineering notation a b/callows entry and display of fractions BSbackspace (right-shift) function 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 LRtwo-variable statistics: linear regression nCrprobability calculations P-Rconverting coordinates between rectangular and polar systems n!factorial |
| Display: | 12, 10+2 digit LCD |
| Power: | 1×AA battery |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.0000010291 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688042113E-70 |
fx-82TL
Inside of the fx-82TL
The original fx-82TL and its clones
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