Slates
Slate computers, which resemble writing slates, are tablet PCs without a dedicated keyboard. Keyboards can usually be attached via a wireless or USB connection.
These tablet PCs typically incorporate small (8.4-14.1 inches/21–36 cm) LCD screens and have been popular for quite some time in vertical markets such as health care, education, and field work.
Slate models are often designed with a focus on mobility and/or ruggedness, eliminating moving parts that could hinder these qualities.