Comparison
 EMG HUNOR 121 |  EMG HUNOR 121B | |
| Manufacturer: | Elektronikus Mérőkészülékek Gyára (Hungary) | Elektronikus Mérőkészülékek Gyára (Hungary) |
| Mfg. date: | 1975-76 | 1977-79 |
| Size: | 18,2×20,8×5,9 cm | 18,2×20,8×5,9 cm |
| Weight (ready for operate): | 980 g | 964 g |
| Price: | HUF 18.800 (papírbolt, 1976) | HUF 9.240 (EMG, 1977) |
| Type: | four-function desktop | four-function desktop |
| Capacity: | 12 digits (input/display) 12 digits (internal precision) | 12 digits (input/display) 12 digits (internal precision) |
| Operating logic: | arithmetic | arithmetic |
| CPU: | Texas Instruments TMS0201NC + TMS0301NC | NEC uPD284C |
| Registers: | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with arithmetic and auto-summation) | 2 standard (with saving the pending operation) 1 constant (with saving the pending operation) 1 memory (with arithmetic and auto-summation) |
| 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, 1, 2, 4, 8) BSbackspace (right-shift) function | %calculation with percent RVexchange registers (X-Y) Fixfixed-point notation: the listed decimals can be chosen (0, 2, 4) |
| Display: | 13 digit VFD (13×NEC LD8035E) | 12+1 digit VFD (13×NEC LD8035) |
| Power: | 220V AC | 220V AC |