This is a basic, 4-digit 7-segment display Sparkfun COM-09480 - yellow in color. It has a common anode. The display features one decimal point per digit, and individually controllable apostrophe and colon points.
The LEDs have a forward voltage of 2.1VDC and a max forward current of 20mA. The hardware interface is sixteen (two rows of eight) through-hole pins.
This is the pin-out:
1: Digit 1 16: B
2: Digit 2 15: G
3: D 14: A
4: Colon Anode 13: C
5: E 12: Colon Cathode
6: Digit 3 11: F
7: Decimal Point 10:Apostrophe Anode
8: Digit 4 9: Apostrophe Cathode
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