| Name | Model 31 |
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| Manufacturer | Tektronix (United Kingdom) | Type | Calculator |
| Production start (mm-yyyy) | 8 - 1973 | Production end (mm-yyyy) | - |
| RAM | ROM | ||
| CPU | Cintra Chipset - Mhz | ||
| Operating System | |||
| Text (Cols x Rows) | 10 Digits | ||
| Graphics | No | ||
| Sound | No | ||
| Storage memory | Tape Drive | ||
| Serial port | Parallel port | ||
| Others port | Expansion Port (BCD Interface 152, Instrument Interface 153, RS-232 Interface 154) | ||
| Original price | Currency original price | ||
| Units sold | |||
| Note | |||
| Configurations | |||
| User | Alessandro Liberalato | ||
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