Tabs run on modified desktop operating systems and help to replace bulky laptops for people on the move while providing the functionality of a PC. Tabs are mainly based on the x-86 IBM-PC architecture but the OS is slightly tweaked to supplement the slightly modified input methods which usually asks for a stylus for basic communication with the device.
Some most common features include;
Mobile browser functions.
Functions of a cellphone.
GPS and video call.
Media players and motion sensors.
We would also like to mention some of the popular tabs in the market today.
Nexus 7(1.3GHz Tegra 3 chips by ASUS)
Kindle Fire HD 8.9(Dual core 1.5GHz OMAP 4470)
iPad mini(Dual core 1GHz A5 CPU)
Nexus 10(Dual core 1.7GHz quad core Exynos 5)
iPad 4(1.4GHz A6X CPU)
Microsoft Surface Pro(1.7GHz Intel Core i5-3317U Ivy Bridge
So that was all about tabs. Deciding on which one to buy is on your needs and expectations from it.