While there are numerous advantages to using a tablet PC, there are also many disadvantages that should be considered before making a costly purchasing mistake. Things to consider include the type and speed of the input process, potential screen damages and repair costs and the use of optical drives and other peripherals.
Laptops provide a keyboard for data entry that is capable of entering 50--100 words per minute. This is far faster than the hand writing recognition software that typically comes standard on tablet PCs. While you could connect a keyboard to a tablet computer, it is less portable in such a configuration. The best solution to this problem is to purchase a hybrid device that combines the best a tablet has to offer with a docking station that transforms it into a laptop. This helps overcome the disadvantages inherent in the touch-screen input system found on tablet PCs.
The next, and often most expensive, disadvantage of using a tablet PC is screen damage. Because the screen is used as the primary input device, tablet computers are prone to problems like cracks, dead pixels, blown back-light bulbs and bad sensors. The LCD screen is one of the most expensive parts to replace on a tablet PC.
Because tablet PCs are designed to be small, light and portable, most do not come with optical drives for use with CDs or DVDs. The manufacturer is able to minimise the size and weight of the overall device by leaving off the drive. Additionally, a tablet computer is designed to be held like a legal pad, and this is not conducive to writing or reading optical media.