horace:
the simplest way is to use serial communications
what software will you use on the PC to transmit the file?
spycatcher2k:
Tell us what you are trying to achieve as this question is nonsense in this context. An arduino pin can be HIGH or LOW, it cannot contain a .txt file.
I am totally Beginner here and I just need to know whether is it possible to send .txt file from PC and appear it on LCD connected with Arduino as output
(Let's just say I have mentioned number 1 to 9 in text file and i wanted to print those numbers on LCD using text file interfacing my PC as well as LCD with arduino)
Apologies If have written something incorrect