A digital display comprises a pixel array arranged in rows and columns, wherein each pixel possesses an selectable optical state; and a plurality of pixel circuits, wherein each pixel circuit is associated with the pixel array. Each pixel circuit comprises an image data register for storing digital image data; a logic circuit coupled to the image data register, capable of selecting and reading digital image data from the image data register and generating output signals based on digital image data and digital logic signals; and a pixel driving circuit for receiving output signals of the logic circuit and determining an optical state of an associated pixel at least partially based on the output signals. Wherein, an output node of the image data register is coupled to a central node of the logic circuit through an option switch and concurrently selects a plurality of image data registers, the output signals being depending on effect results of digital image data of a plurality of image data registers and digital logic signals.