Keinyo S816MS
Brief History
South-Korean electronics company named Detron Co. produced in the second half of 1970's several scientific calculators. The most powerful one was the S816MS, which has an american Rockwell-made CPU. Detron sold its machines under different brands, one of them was Keinyo.
This calculator belongs to the courtesy of Hungarian Museum of Science, Technology and Transport.
| Manufacturer: | Keinyo (Korea) |
| OEM: | Detron Co. (Korea) |
| OEM model: | S816MS |
| Mfg. date: | 1979 |
| Size: | 7,5×13,6×1,9 cm |
| Weight (ready for operate): | n.a. |
| Type: | scientific |
| Capacity: | 8+2 digits (input/display) 8+2 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Rockwell A4806EB |
| 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: | +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) 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) DMS-DDconversion of decimal and sexagesimal numbers logexponential and logarithmical functions (10- and e-base) yxraising to power |
| Display: | 12 digit VFD |
| Power: | 2×AA-type battery 3V adaptor |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 61.2093 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00705E-70 |
Keinyo S816MS
Inside of the S816MS
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