| Company | Resistive | Capacitive | Acoustic | IR | Platform | |||
|---|---|---|---|---|---|---|---|---|
| Four-wire | Five-wire | Analog | Projected | SAW | GAW | |||
| Carrol Touch | X | X | ||||||
| Computer Dynamics Inc. | X | X | ||||||
| Dynapro Technology | X | |||||||
| Elo Touchsystems | X | X | ||||||
| MicroTouch Systems Inc. | X | X (with pen) |
X | X | ||||
| Philips Semiconductor | X (with pen) |
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| Symbios Logic | X (with pen) |
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