User manual
Ausgabe 19.05.2017 Copyright by Joy-IT 39
5.14 Project 14: 1-digit LED segment display
The LED segment displays are very common displays for numeric informaons.
They are oen used in electric ovens, washing machines, water-temperature
displays and electric clocks.
The LED segment display is a semi-conductor and a light eming devie.
Its base-unit is a LED:
The segment display can be devided in a 7-segement and a 8-segment display.
The 8-segment display contains one more LED-unit (for the decimal dot).
Depending on the wiring, the displays can also be devided in displays with common anode and common
cathode.
The display with common anode combines every anodes to one common anode (COM).
If you are using a display with a common anode, the common anode (COM) has to be connected to +5V.
If the cathode-level of a segment is low, the segment is acvated.
If you are using a display with a common cathode, the common cathode (COM) has to be connected to
GND.