Seven segment displays are often packaged in rectangles, but the digit shape slants, which makes the digits more attractive and also creates a convenient space for a small decimal point at the bottom right and an inverted comma at the top left. Check your meter with a sound test (touch both the leads together, and a sound will be produced).Ģ.2.Now take the multimeter (assuming a red lead for positive and a black lead for negative) and set it to the proper continuity range.Hold the display in your hand and identify pin 1.How do you find common anode 7 segment display? Now if your small circle led lit’s it means that your seven segment is properly working and now you can use it.Apply +5 volts to dp(decimal/display point) pin in series to a 510 ohm-1k ohm resistor to limit the current.For common cathode make GND pin ground.
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