7-segment LED display is a display by controlling the display of semiconductor light-emitting diodes, used to display text, graphics, images, animation, market, video, video signals and other information display screen.

A plurality of light-emitting diodes are packaged together in a seven-segment digital display in the form of a connection which can be divided into a common male display and a common cathode display. 7 Segment LED Display A total of seven and a total of Yin and the display, in addition to the display shows the number of seven strokes must also provide a decimal point. The anode of the common male display is connected together. At this time, a positive voltage is supplied to the anode, and its cathode is controlled to a high or low level to determine its dark or bright by limiting the current. The cathode of the common display is connected together, and the cathode can be grounded to control its anode to high or low to determine its bright or dark.

The 7-segment LED display shows the font size of the display itself. Therefore, in the display of more complex characters, characters or graphics, you can use the point Chen show the way.

LED display application editing

The 7-segment LED display is compatible with standard drivers and offers a wide range of ideal performance in extremely hot conditions:

Industrial control equipment technology (oil and gas flow meters, for heavy motor control technology and welding lines to provide drive control display)

Military applications (including aircraft, ground transportation, GPS and walkie-talkie systems).

Equipment (including oven, microwave and dishwasher display).

7-segment LED display by the internal multi-light-emitting diodes, 7 Segment LED Display according to the different ways can be divided into common anode and common cathode two. In the display drive mode, the use of dynamic scanning technology. When scanning to n1 ~ n4 common, the LED driver corresponding to the output a ~ dp display segment, LED can be normal display. In the custom LED display driver chip, LPC series P87LPC762 microcontroller chip has a good port setting ability and strong internal functions, you can program to set its pin function 9 as the LED display driver chip.

From the full efficiency to choose the LED display power supply, 7 Segment LED Display power efficiency is the most important one indicator, high efficiency of the power supply energy conversion rate is high, so that both the requirements of energy saving and environmental protection, but also for the user to save the province money.