Comparison
 EMG HUNOR 81B (2) |  EMG HUNOR 131 | |
| Manufacturer: | Elektronikus Mérőkészülékek Gyára (Hungary) | Elektronikus Mérőkészülékek Gyára (Hungary) |
| Mfg. date: | 1976 | 1966-70 |
| Size: | 18,2×20,8×5,9 cm | 48×51×23 cm |
| Weight (ready for operate): | 963 g | |
| Price: | HUF 8.040 (papírbolt, 1976) | HUF 85.300 (MIGÉRT, 1967) |
| Type: | four-function desktop | four-function desktop |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) | 13 digits (input/display) 13 digits (internal precision) |
| Operating logic: | arithmetic | custom |
| CPU: | Texas Instruments TMS0105NC | tranzisztoros |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) |
| Features: | %calculation with percent Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0, 1, 2, 4, 7) | Ffloating-point notation |
| Display: | 8+1 digit VFD (9×FUTABA DG8R) | 13 digit Nixie-tube |
| Power: | 220V AC rechargeable battery (optional) | 220V AC |