ABM diamant-scientific 7003
Brief History
The pocket calculators branded diamant were introduced first in 1973 at the swiss ABM (Au Bon Marché, means „at reasonable prices”) department stores. The machines were imported from Japan. After the success of the first series, multiple variants were marketed. The last one of the brand diamant was the most powerful one too: the diamant-scientific 7003 used Mitsubishi’s M58628 CPU which allows 8+2 digits displayed with internal precision of 10+2 digits, and has some high-end features such hyperbolic functions and coordinate conversions. Due to dumping of cheap far-east calculators, ABM had abandoned this field.
| Manufacturer: | ABM (Switzerland) |
| OEM: | https://www.watchestoreuk.cz/ (Japan) |
| OEM model: | n.a. |
| Mfg. date: | 1976 |
| Size: | 8,3×15,3×2,9 cm |
| Weight (ready for operate): | n.a. |
| Type: | scientific |
| Capacity: | 8/8+2 digits (input/display) 10+2 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | Mitsubishi M58628-001P |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 3 bracket (with saving the pending operation) 4 memory (with aritmetic) |
| Features: | +/-change sign (direct entry of negative numbers) RVexchange registers (X-Y) Fixfixed-point notation: the listed decimals can be chosen (0-7) 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: | 12 digit VFD (NEC LD8141) |
| 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. 60.00115935 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.006896298E-70 |
diamant-scientific 7003
Inside of the diamant-scientific 7003
Keyboard of the diamant-scientific
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