Complex sentence: Perfboard differs from stripboard in that each pad is isolated, while stripboard is made with rows of copper conductors to form default connections, which are broken into isolated segments by scraping through the copper.
Split into simpler sentences: Perfboard differs from stripboard in that each pad on perfboard is isolated. Stripboard is made with rows of copper conductors that form default connections, which are broken into isolated segments by scraping through the copper.