What is a Netbook?
A netbook is a small to medium sized, light-weight, low-cost, energy-efficient laptop, generally optimized for internet based services such as web browsing and e-mailing. Netbooks are also sometimes, but rarely referred to as a sub-subnotebook. ASUS Eee PC, MSI Wind PC, HP Mini-Note PC, CloudBook...
The form factor of a netbook is smaller than that of a notebook and they are very light in weight (usually 2 to 3 pounds). Common features include a small screen (usually around 7-inches to 10-inches diagonal), wireless connectivity, but no optical disc drive, and a smaller sized keyboard (usually 80 percent to 95 percent of normal size). There is also a trend of using solid-state drives instead of traditional hard disk drives.