The 7447 chip is used to drive 7 segment display.
You must use the 7447 with a common anode 7-segment display. The input to the 7447 is a binary number DCBA where D is 8s, C is 4s, B is 2s and A is 1s. The inputs DCBA often come from a binary counter.
Output
Pin Diagram
This pin diagram of 7447 IC where
Pin 7 - A
Pin 1 - B
Pin 2 - C
Pin 6 - D
In Seven Segment Display (Common Cathode)
Pins are represented by alphabets on display as well as on 7447 ic
For more details have look at circuit diagram below
Circuit Diagram
This is whole working circuit for seven segment display
R0 - 390 ohms (Led with dip switch resistance )
R1 - 100 ohms
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