Intensity Control Circuit for Segmented Display Elements
Original Publication Date: 1981-Aug-01
Included in the Prior Art Database: 2005-Feb-12
This article describes a simple logic circuit for controlling the display intensity of optical display elements such as LED (light-emitting diode) matrices or multi-segment LED characters. An N-bit shift register can be loaded under program control to establish a variable width pulse which, when gated to the display element driver gates, can be used to vary the intensity.