Теорія до теми за посиланням
https://sites.google.com/view/onlayn-konspekt-z-informatiku/10-%D0%BA%D0%BB%D0%B0%D1%81/%D1%83%D1%80%D0%BE%D0%BA-10-%D0%B2%D1%96%D0%B7%D1%83%D0%B0%D0%BB%D1%96%D0%B7%D0%B0%D1%86%D1%96%D1%8F-%D1%80%D1%8F%D0%B4%D1%96%D0%B2-%D1%96-%D1%82%D1%80%D0%B5%D0%BD%D0%B4%D1%96%D0%B2-%D0%B4%D0%B0%D0%BD%D0%B8%D1%85-%D1%96%D0%BD%D1%84%D0%BE%D0%B3%D1%80%D0%B0%D1%84%D1%96%D0%BA%D0%B0