Ref; https://www.researchgate.net/figure/FriendlyARM-Mini2440-Development-Board_fig12_276487397
[...] Of late, there has been a rise in the use of TOUCHSCREENS in many handheld devices, one in particular being the SMARTPHONE. Accompanying this is a myriad of smartphone platforms, each of which boasts a user-friendly GUI in its own accord. One of the major aspects of SMARTPHONES is the GUI, since this is the ASPECT with which users INTERACT. [...]
[...] Of late, there has been a rise in the use of TOUCHSCREENS in many handheld devices, one in particular being the SMARTPHONE. Accompanying this is a myriad of smartphone platforms, each of which boasts a user-friendly GUI in its own accord. One of the major aspects of SMARTPHONES is the GUI, since this is the ASPECT with which users INTERACT. [...]