Translation:A computer application
If it is spelt 'program', yes - that seems to be the standard spelling if it is a computer program, as opposed to a British English 'programme of work' or 'TV programme'.
Rhaglen deledu am gyfrifiadurau oedd "Y Rhaglen Gyfrifiadurol" yn yr wythdegau. (Disclosure - I looked back to our discussion about "Cymdeithas newydd" to check the grammar on that. Edit - added the mutation on deledu after checking genders in Ap Geiriaduron)