A seven segment display is the most basic electronic display device that can display digits from 0-9. They find wide application in devices that display numeric information like digital clocks, radio, microwave ovens, electronic meters etc. The most common configuration has an array of eight LEDs arranged in a special pattern to display these digits. They are laid out as a squared-off figure ‘8’. Every LED is assigned a name from ‘a’ to ‘h’ and is identified by its name. Seven LEDs ‘a’ to ‘g’ are used to display the numerals while eighth LED ‘h’ is used to display the dot/decimal.
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