APF Mark 90
| Manufacturer: | APF Electronics, Inc. (/) |
| Mfg. date: | 1977 |
| Size: | 7,8×15,2×3 cm |
| Weight (ready for operate): | n.a. |
| Type: | programmable scientific |
| Capacity: | 8/8+2 digits (input/display) 9/9+2 digits (internal precision) |
| Operating logic: | |
| CPU: | MOS MPS7530 201 |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 4 bracket (with saving the pending operation) 10 memory (with aritmetic) |
| Features: | %calculation with percent +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0-7) Sciscientific (exponential) notation Engengineering 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 LRtwo-variable statistics: linear regression nCrprobability calculations P-Rconverting coordinates between rectangular and polar systems n!factorial |
| Display: | 8+2+2 digit (HP) |
| Power: | 3×AA NiCd akkumulátor (beépítve) |
| Program capacity: | 72 |
| Test results: | trigonometriai:az arcsin(arccos(arctg(tg(cos(sin(60°)))))) eredménye, referenciaérték: 60. 60.08726889 exponenciális:a 0.999160000 eredménye, referenciaérték (első 14 jegye): 3.0068804206375×10-70 3.006559827E-70 |
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