Seven Segment Driver-CD4511B

[sssuneth]

Could any one tell me how this works

and Do i need to use 7 330Ohm transistors soon after abcdefg lines?

https://www.electro-tech-online.com/custompdfs/2011/05/cd4511b.pdf

thanks

 

[ericgibbs]

hi,
Yes, its a common cathode LED driver.

EDIT: image