Comparison
 EMG HUNOR 81 |  EMG HUNOR 81B (2) | |
| Manufacturer: | Elektronikus Mérőkészülékek Gyára (Hungary) | Elektronikus Mérőkészülékek Gyára (Hungary) |
| OEM: | https://www.ukclonewatch.me/ (ismeretlen) | |
| OEM model: | n.a. | |
| Mfg. date: | 1973 | 1976 |
| Size: | 18,2×20,8×5,9 cm | 18,2×20,8×5,9 cm |
| Weight (ready for operate): | 950 g | 963 g |
| Price: | HUF 13.700 (MIGÉRT, 1974) | HUF 8.040 (papírbolt, 1976) |
| Type: | four-function desktop | four-function desktop |
| Capacity: | 8 digits (input/display) 8 digits (internal precision) | 8 digits (input/display) 8 digits (internal precision) |
| Operating logic: | arithmetic | arithmetic |
| CPU: | Texas Instruments TMS0105NC | Texas Instruments TMS0105NC |
| 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) | %calculation with percent Ffloating-point notation Fixfixed-point notation: the listed decimals can be chosen (0, 1, 2, 4, 7) |
| Display: | 8+1 digit incandescent (9×FUJI 3015-F) | 8+1 digit VFD (9×FUTABA DG8R) |
| Power: | 220V AC rechargeable battery (optional) | 220V AC rechargeable battery (optional) |