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LED Digital Display Profile
Jun 21, 2017

LED digital display profile

The eight-segment LED digital tube display consists of eight leds.

Base in seven elongated luminous tube arranged in "day" glyph, another point, form the luminous tube on the most right-lower conner of the digital tube display for displaying the decimal point, it can show various part Numbers and letters. The LED digital tube display comes in two different forms: a single anode with eight leds, called a common anode LED digital tube display. The other is a cathode LED digital tube display, which is connected by eight leds.

The LED digital tube displays in the shade and synyang structures are the same in each stroke. When the diode is conducted, the corresponding strokes are illuminated by the various characters that are displayed by the bright strokes of the stroke. Eight strokes of the hgfedcba correspond to a byte (8 bits) D7 D6 D5 D4 D3 D2 D0 D0, so you can express the font code of the character with the 8-bit binary code.

For example, for a total of Yin LED digital tube display, when public cathode grounding (zero level), and the anode hgfedcba paragraphs to 0111011, digital tube display shows "P" characters, namely for the common cathode LED digital tube display, "P" character glyph code is 73 h. If it is a total solar LED digital tube display, the public anode will be high level and the "P" character should be 10001100 (8CH). What must be noted here is that many products are convenient for wiring, and often do not follow the rules to correspond to the corresponding fields, which must be designed according to the wiring.

In the single-chip application system, the digital tube display displays two common approaches: static display and dynamic scan display.

You can talk more about static display here. In fact, it's every digital tube display that takes up a separate I/O interface with a lock feature for the stroke code. This single chip microcomputer as long as the font to display the code sent to interface circuit, and they will take care of it, until to show the new data, then send the new glyph code, therefore, the use of this method in the single-chip microcomputer CPU overhead small. There are a lot of I/O interface circuits that can supply individual locks.