CpG Islands. CpG Islands searches for CpG islands in a DNA sequence using the method described by Gardiner-Garden and Frommer (1987). The calculation is performed using a 200 bp window moving across the sequence at 1 bp intervals. CpG islands are defined as sequence ranges that give a y-value of greater than 0.6 and a GC content of greater than 50%.
A touchscreen is an input and output device normally layered on the top of an electronic visual display of an information processing system. A user can give input or control the information processing system through simple or multi-touch gestures by touching the screen with a special stylus and/or one or more fingers. Some touchscreens use ordinary or specially coated gloves to work while others may only work using a special stylus/pen.
(1) A pen-shaped instrument that absorbs current and is used with the capacitive touchscreens on smartphones and tablets. See stylus pen and touchscreen. (2) A pen-shaped instrument that is used to draw images or select from menus on resistive touchscreens that react to pressure. See touchscreen. PDA Styli. A stylus was common on Palm PDAs, which required pressure on the screen to operate.