Framebuffer
The Linux framebuffer (fbdev) is a graphic hardware-independent abstraction layer to show graphics on a display. The framebuffer represents the buffer of some video hardware, adn allows application software to access the graphic hardware through a well-defined interface.
Utilities
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fbset
fbsetis a system utility to show or change the settings of the frame buffer device. The frame buffer device provides a simple and unique interface to access different kinds of graphic displays.
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ts_calibrate
ts_calibrateis a program to calibrate touchscreens on embedded devices.
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fbsplash
fbsplashis a utility used to set a.ppmimage file to the boot splash on a framebuffer device.