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Tablet PC Feature Comparison
Here is a comparison of the features of the Tablet PC compared to other Microsoft pen based operating systems:
| Feature/Product | Tablet PC | Windows XP | Pocket PC 2002 / Windows Mobile 2003 | Handheld PC 2000 |
| Digitizer (screen for input) used as a mouse | Electromagnetic | optional | Analog | Analog |
| Optimized Power States | Required | optional | Required | Required |
| Screen Rotation | Required | optional | 3rd Party s/w | n/a |
| Screen Resolution | 120 DPI, 800 x 600 or greater | 96 DPI or 120 DPI, 640 x 480 or greater | 320 x 240 | 640 x 240 |
| Surprise Undocking | Required | optional | Required | Required |
| Legacy Free Hardware | Required | optional | n/a | n/a |
| Hardware Button to Logon to Windows | Required | none | n/a | n/a |
| Ink Support | Yes | No | Yes | No |
| Windows Journal | Yes | No | No | No |
| On Screen Keyboard | Yes | Yes - with Office XP, requires manual install | Yes | No |
| On Screen Handwriting Recognition | Yes | Yes - with Office XP, requires manual install | Yes | No |
See Microsoft's Windows XP Tablet PC Edition Specifications for details.