What is seven segment display?
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A seven segment display is an electronic display device typically composed of seven independent LED segments arranged in a specific way to display numbers 0 to 9 and certain letters or symbols. Each LED segment can be independently lit or turned off by controlling the current, thus combining into different characters.
There are two main types of seven segment digital displays: common anode and common cathode. In the common anode type, all LED anodes (positive electrodes) are connected together and connected to a positive power source through a common terminal. In the common cathode type, all LED cathodes (negative electrodes) are connected together and connected to ground or negative power through a common terminal. Different types of seven segment digital displays require different driving circuits and control signals to achieve correct display.
When using a seven segment digital display, it is usually necessary to combine it with appropriate driving circuits and control logic. The control logic generates corresponding control signals based on the numbers or characters to be displayed, which are transmitted to the seven segment digital display through the driving circuit, thereby lighting up the corresponding LED segments to display the required numbers or characters.
Seven segment digital displays are widely used in various electronic devices, such as calculators, electronic watches, thermometers, timers, etc., to display numbers or simple text information. They have the advantages of low cost, low power consumption, and high reliability, making them ideal choices in many applications.
In addition, in addition to the basic 7 segments digital display, there are also some variants and extended versions, such as eight segment digital displays with decimal points, multi digits 7 segments digital display arrays, etc., which can provide more display functions and flexibility.
