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Does the sentence
In present day technology, the method can be broadly applied.
correctly translate the idea that
Now, with the development of inexpensive desktop computers, the method can be broadly applied.
You shoud say: With present-day technology, the method can be broadly applied
Yes, the meaning is similar to the second sentence if you are implying a wider accessibility of technology to general public.
There is no need to say "present day", it should just be "present". I would start the sentence - "With present technology..."
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