EMG HUNOR 252 (2)
Brief History
There were developed scientific models in the IC-based series of calculators at EMG (Factory for Electronic Measuring Instruments) in 1973,
but due to supply problems, the two models had to be redesigned. The only scientific model, Hunor 252
was announced in 1975.
May be interesting: this calculator was identical to pocket-sized Híradástechnika TK-835, which was built in 1974.
| Manufacturer: | Elektronikus Mérőkészülékek Gyára (Hungary) |
| Mfg. date: | 1976-77 |
| Size: | 18,2×20,8×5,9 cm |
| Weight (ready for operate): | 965 g |
| Price: | HUF 12.700 (EMG, 1977) |
| Type: | scientific desktop |
| Capacity: | 10/10+2 digits (input/display) 10/10+2 digits (internal precision) |
| Operating logic: | algebraic |
| CPU: | MOS MCS2525 001 + MCS2526 001 |
| Registers: | 2 standard (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 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 |
| Display: | 10+2+2 digit VFD (14×NEC LD8035) |
| Power: | 220V AC |
| Test results: | trigonometry:result of sin-1(cos-1(tan-1(tan(cos(sin(60°)))))), reference value: 60. 60.0632958 exponential:result of 0.999160000, reference value (first 14 digits): 3.0068804206375×10-70 3.00704091E-70 |
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