Privileg SR80D-NC
Brief History
The west-german catalog store Quelle strived to broaden its scientific calculator family for students. The highest quality was represented by Commodore’s OEM models, from simple scientific models to more complex programmable ones. Commodore and MOS developed a specific CPU for calculators which allowed to design a wide scale of scientific and financial models with common circuitry: in addition to the MOS MPS 7200 (Commodore GHU-03) CPU, one or two additional ROM chips contains the "software" for the specific model. The Privileg SR80D-NC was functionally identical to Commodore SR-1800, which used VFD display tube instead of widely used LED display, but Privileg has bigger keys to make this model very comfortable.
| Manufacturer: | Quelle International (West-Germany) |
| OEM: | Commodore Business Machines (USA) |
| OEM model: | n.a. |
| Mfg. date: | 1976 |
| Size: | 8,6×16,5×3,9 cm |
| Weight (ready for operate): | n.a. |
| Type: | scientific |
| Capacity: | 8/8+2 digits (input/display) 12+2 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Commodore GHU-03A + KGHU-01T |
| Registers: | 2 standard (with saving the pending operation) 2 bracket (with saving the pending operation) 2 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) 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 |
| Display: | 12 digit VFD (Itron FG125A2) |
| Power: | 3×AA NiCd battery (built-in) |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.0011368405 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00688022153E-70 |
Privileg SR80D-NC
PCB of the SR80D-NC: the bigger chip is the CPU, the smaller is ROM
Keyboard and display of the SR80D-NC
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