B4R Question B4r inject hex file to micro

hi
i create project with arduino uno board .
now i want create pcb board with atmega328 micro controller ( like arduino uno micro ) and connect pins to buttons and 7segment ( like shields that used ) and inject program to micro controller.
how i can do it ?
if i use programmer and inject HEX file , its work ?
where id HEX file ?
 
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