| Manufacturer: | RADIO SHACK |
| Model: | EC4000 |
| AKA: | Programmable |
| Year: | 1978 |
| Display: | LED (12) |
| Circuits: | |
| Dimensions: | 146x76x35 mm |
| Power type: | Rechargeable |
| Origin: | USA |
| S/N: | 6528011 |
| Owner: | DEVIDTS Serge |
| Info: | OEM-copy of: TEXAS INSTRUMENTS: 57 |
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