Olympia 55-20
Brief History
In addition to distributing calculators manufactured by the partner company Matsushita in Japan, the French subsidiary of Olympia International also imported OEM machines of some Japanese, Korean and Hong Kong manufacturers exclusively to the French market. The 55 series of calculators, imported in 1982 and manufactured in South Korea, made with NEC circuits, were therefore only produced with French labeling. Since the machines were made with circuits produced in millions, their functions are identical to some models of different manufacturers even often found in popular catalog stores. The 55-10 was an eight-digit, four-function machine with a non-volatile memory (functionally identical to Triumph/Adler L815, or the Matsushita/Panasonic 351 models); the 55-20 is a more sophisticated scientific-statistical calculator (functionally identical to the Matsushita-made Aristo M800 or the Matsushita/Panasonic JE-1431 models): its two shift keys indicate the large number of available functions.
| Manufacturer: | Olympia-Werke AG (West-Germany) |
| Mfg. date: | 1982 |
| Size: | 6,9×12,3×1 cm |
| Weight (ready for operate): | n.a. |
| Type: | scientific |
| Capacity: | 10/8+2 digits (input/display) 11+2 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | NEC D1856G |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 2 bracket (with saving the pending operation) 1 memory (with aritmetic) |
| Features: | +/-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 nCrprobability calculations P-Rconverting coordinates between rectangular and polar systems n!factorial |
| Display: | 11+1 digit LCD |
| Power: | 2×LR43 button cell |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.00001841 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688043E-70 |
55-20
Inside of the 55-20
Similar items
