མཉེན་ཆས་ / སྙི་ཆས་ means ‘software’ (it’s a new computer term)
Yes~!
ང་ = I, ཡང་ = also / too
In Tibetan, the verbs for ‘to be’ are used for “yes” and “no” (eg རེད་རེད།, ལགས་ཡིན།). This is a similar use, “yes+yes”, so emphatic “yes”. Usually translated “of course!”.
Very close! དཔེ་ = example (n.), but as an (adj) “very”, kind of similar to how we say “exemplary”. So “very happy / enjoyable / good”. Ex. ས་ཆ་ འདི་ དཔེ་ སྐྱིད་པོ་ འདུག་ “This is a really nice place!”