Sharp EL-506
Brief History
After Sharp launched its first thin scientific calculator equipped with liquid crystal display (LCD) in 1977, several new models were introduced: EL-5806's 8 + 2-digit display capacity not only outpaced other Sharp LCD models, but similar types of competitors. By 1979, the EL-5806S with similar capabilities and the new EL-506 were completed. Latter has display capacity of 10 or 8+2 digits, depending on the display mode, and can handle area functions (arc hyp) too. It was replaced in 1981 by the EL-506S, which has undergone a minimal cosmetic change with the same knowledge.
This calculator belongs to the courtesy of Hungarian Museum of Science, Technology and Transport.
| Manufacturer: | Sharp Corporation (Japan) |
| Mfg. date: | 1979-80 |
| Size: | 6,7×12×1 cm |
| Weight (ready for operate): | 72 g |
| Type: | scientific |
| Capacity: | 10/8+2 digits (input/display) 11+2 digits (internal precision) |
| Operating logic: | algebraic with precedence |
| CPU: | Toshiba SC3800ES |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 3 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 Sciscientific (exponential) 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: | 11+1 digit LCD |
| Power: | 2×LR44 button cell |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.000009718 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688042E-70 |
EL-506
Inside of the EL-506
Display and keyboard of the EL-506
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