TI-80
| Type | Graphing calculator | 
|---|---|
| Manufacturer | Texas Instruments | 
| Introduced | 1995 | 
| Discontinued | 1998 | 
| Successor | TI-73 series | 
| Calculator | |
| Entry mode | D.A.L. | 
| Precision | 13 | 
| Display size | 64×48 pixels, 16×8 characters | 
| CPU | |
| Processor | Proprietary (on board a Toshiba T6M53 or T6M53A ASIC) | 
| Frequency | 980 kHz | 
| Programming | |
| User memory | 7 KB of RAM | 
| Other | |
| Power supply | 2 CR2032 batteries | 
| Weight | 106 grams (3.7 oz) | 
| Dimensions | 163 mm × 71 mm × 15 mm (6.4 in × 2.8 in × 0.60 in) | 
The TI-80 is a graphing calculator introduced by Texas Instruments in 1995 to be used at a middle school level (grades 6 to 8). It offered advanced capabilities that had previously only been available in high-end scientific calculators to students learning pre-algebra and algebra, and was designed to be affordable for schools.