# What does summation EVEN and summation ODD exactly mean in truth table of IC 74180 which is used as a parity generator and parity checker?

I was trying to implement parity generator for 8 bit message using IC 74180. I understand the purpose of all the pins but don't what do those two output pins namely summation(Even) and summation(odd) mean? I couldn't find any clear explanation anywhere else.

• it is sum ... the sum of 1 bits Oct 2 '21 at 17:54
• don't forget that the IC is a parity bit generator ... so the output is a parity bit for the input bits Oct 2 '21 at 18:03
• Doesn't the truth table give it to you? Oct 3 '21 at 19:31