7-SEGMENT DISPLAY
One way to visualize the numbers is through this type of display where every access led in the right combination makes the decimal number appear. Each segment of the display is an LED along with a limiting resistor. There are two large types of 7-segment displays, those with common anode (AC) and those with common cathode (CC).
7-SEGMENT BCD DECODING
To be able to read a number, so-called decoders are used, in particular in our case a “BCD-7 Segments” decoder which converts the binary input into a combination of seven outputs that turn on the various LEDs. The outputs Q3, Q2, Q1, Q0 coincide with the inputs of the decoder (D, C, B, A) connected to the display through the respective pins.
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