Category: Interfacing with Microprocessors

Types of LCD Displays

Types of LCD Displays: The Types of LCD Displays are one of the most fascinating material systems in nature, having properties of liquids as well as of a solid crystal. The terms liquid crystal refers to the fact that these compounds have a crystalline arrangement of molecules, yet they flow like a liquid. Liquid crystal […]

18 Segment Display

18 Segment Display: The Fig. 15.5 shows the 18 Segment Display. They are used to display numbers and alphabets. Like 7-segment displays, 18 Segment Display are also interfaced through 8279 to the microprocessor. Here, instead of 7-segment code, ASCII codes for characters to be displayed are stored in the display RAM and then with the […]

BCD to 7 Segment Decoder using IC 7447

BCD to 7 Segment Decoder using IC 7447: BCD to 7 Segment Decoder using IC 7447 are generally used as numerical indicators and consists of a number of LEDs arranged in seven segments as shown in the Fig. 15.1. Any number between 0 and 9 can be indicated by lighting the appropriate segments. The 7-segment […]