The segment displays and LED matrix

Segment displays are very commonly used elements, whose task is to display information consisting of letters, digits, or special characters. With the help of binary signals generated by the control system segment display, you can enter the information you want to view and to read measurement data. The displays segment has gained popularity, appearing including game shows, as information about the prize participants or the time remaining until the end of the round. Currently, often, particularly in watches, calculators, equipment, APPLIANCES and ELECTRONICS, outdoor ads, and operator panels machines, measuring instruments and many other electronic devices. The range of the display segment one -, two-, four - and ośmioznakowe and LED RGB, with a resolution to it from 1x8 to 64x32. Two of the most popular products in this category display a 7-segment and 8 segment.


Screen - type
Screen - diagonal
Screen - resolution
Screen - interface
Screen - touch

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The device and principle of operation display sectional

Typical construction segment display LEDs are used, which is influenced by connection voltage connector of the p-n conductors, as seen by the illumination of one or more segments. Most often, the displays segment act as 8-section, outdoors, consisting of four vertical or oblique lines and three horizontal lines, Contracting in the form of the number 8 and the eighth segment in the form of a point. The LEDs forming the individual segments light up only when it is not energized polaryzujące diode in the direction of conduction, and the brightness of the segment will depend approximately linearly proportional to the current passing through the diode. Because of this, to prevent damage to the display, connect the segments to the voltage source through resistors, limiting the current. The color of the light segment is associated with the voltage at the LED, forming the segment. For red the voltage drop across the diode is about. Of 2.0-2.2 V, while for the blue color is approx. and 3.6 V. For normal, individual display 8-segment consisting of red LEDs, the current consumption is approx. 15 mA per segment - considering that the display will be controlled via the driver circuit to operate the voltage of the TTL level (5.0 V) and the voltage drop will be the 2.0 V on the segment, with reference to Ohm's law and the range of E96 resistors, required segments of the display to connect the 220Ω resistors. Display 7 segment also can be the perfect solution for Your project.

The display control segmentowymi using logic circuits

Sectional displays can be controlled with a microcontroller, but in the form of pure hardware, e.g., using the system CD4511, amounting to 7-segment driver and decoder BCD to one (the system does not support segment display imitującego point) to manage the displays connected inside the common cathode. The system is supplied with the voltage of 5.0 V and has four inputs labeled A, B, C and D and the corresponding step bit is, respectively, 1, 2, 4 and 8. The driver has seven logic inputs, one for each segment. The maximum output current of one output is 25mA. Selecting resistors, you can, depending on the needs of the project to set the intensity of the segments.

LED RGB - glamorous and practical

The matrix of LEDs, RGB , are arranged in a two-dimensional Board, allow the display of various symbols, graphic symbols, and more! Such signs encountered in daily life, particularly as mosaic advertising displays and passenger information. We offer LED can be controlled with Arduino and Raspberry Pi. Thanks to the integrated controller for processing a matrix is simply a single pin of the microcontroller. We offer RGB LED, available in different sizes of rows and columns, i.e. from 1x8 to 64x32. Because of this, using the LED matrix RGB you will be able to diversify the appearance of the interface of operator panel, as well as to build a stage for displaying gorgeous animation!