The device is a 8-digit, 5x7 dot matrix, alphanumeric display and are all packaged in a standard 15.24mm 128 pin DIP. The on-board CMOS IC has the ability to permanently stored in ROM. In addition, 16 programmable symbols may be stored in on-board ROM, allowing considerable flexibility for displaying additional symbols and icons. Seven brightness levels provide versatility in adjusting the display intensity and power consumption. The HDSP-2503 is designed for standard microprocessor interface techniques. The display and special features are accessed through a bidirectional 8-bit data bus.