What is priority encoder ? How it solves limitations of encoder? | Explained with example.

[@SunnyKumar-of3vx]

Very nice explaination....thanks

[@KarthikVippala]

Namaste 🙏 sunny, thanks for the support, good luck and great health 👍😊

[@GiridharPedapudi]

How to convert a msb priority encoder to a lsb priority encoder???

[@shalomnaveen4564]

What are the real life examples for priority encoder?

[@PavanKumar-so6sz]

Don't assume that all the inputs are counters. He put all combinations. Now coming to real life example: If you have four ports sending data and there is an arbiter/mux which pics one of the port based on priority. I0, I1, I2 and I3 are four ports. '1' is data valid on each port. All possibilities of valid data on each port as below. 0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 Where '1' is data valid. As per the priority encoder, the output is two bits. Example : 1011 -> data is valid at port 3, port 1 and port0. For MSB priority encoder the intermediate output is 1000. Final output is 11. 'b11 -> 'd3 arbiter/mux picks up port 3 data. Port 0 and port 1 data is ignored at this time. In an efficient design, port 0 and port 1 data are stored (let's say in FIFOs) and pulled when port 0 and port 1 has owned the priority.

[@stefanussuprianto]

Is 74147 a priority encoder? Because there are don't care conditions

[@KarthikVippala]

Hey stefanus suprianto , yes it is a Decimal to BCD priority encoder (10to4 line priority encoder). Thanks for asking the question 👍 If you have any doubts, feel free to comment. Please do subscribe it will help me a lot 👍

[@stefanussuprianto]

@@KarthikVippala Thank you very much I will ask you if I have any doubt. I will subscribe you. Anyway, thanks.

[@KarthikVippala]

@@stefanussupriantothanks for the support 🙏 , I am happy to help you 👍

[@stefanussuprianto]

@@KarthikVippala Sorry to ask again, but for the IC 74147 that I'm using, is it active in low logic condition or high logic condition?

[@KarthikVippala]

Hey don't feel sorry , you have doubt you must clear it without guilt. We use ACTIVE LOW in IC 74147 , ie to use any of the input we will make them LOW . Info that might be useful: ACTIVE HIGH is opposite of active low ,in active high to use inputs we will make them HIGH Always here to help feel free to comment 👍