as ic 555 is there for use, other ic can be used,reply please

Hi Atish09, Welcome to EasyEDA. * Are you asking about how to add an IC for: 1) simulation or 2) for schematic capture (without simulation) * Is there a particular IC you wish to add and/or to simulate?

If you want to add devices for simulation, then please see: 13. Device models in: https://docs.google.com/document/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.2iq8gzs and: 14. Schematic symbols: prefixes and pin numbers in: https://docs.google.com/document/d/1OWZVVFRAe_2NW3WratpkA_SGuHa5AcRow5ZRfvcoVTU/pub#h.pkwqa1 :)