PC sales are on a slow slide downward as people turn more to smartphones and tablets. Recent data indicates how age groups use these devices.

The first group were from ages 12-23. They use mainly smartphones, but will also use PC's for school and projects.

The second age group was from 24-40. They also rely heavily on smartphones, but use a mix of technology. They tend to really like tablets, too, and use them to surf the Web, do email and social networking and especially for reading books and watching movies. But they also use their PCs or laptops a lot, particularly to do productivity tasks or projects.

The third group covers ages 40-65. This group primarily uses PC's. This is the age group that are buying the most PCs and laptops to replace their older models. They may use smartphones and tablets, but their main stay is the PC.

The fourth group is ages 65-80+. This group has moved away from PC's and mainly rely on tablets.

The only bright spot for PC manufacturers are enterprises that are finally starting to buy PCs and laptops again. However, many are replacing their older models with PC's running Windows 7.