Úvod
Video
https://www.google.sk/search?q=hygiena+pri+praci+s+pc&rlz=1C1GCEA_enSK850SK850&oq=hyg&aqs=chrome.0.69i59j69i60l3j69i57j0.1917j0j9&sourceid=chrome&ie=UTF-8https://www.google.sk/search?q=hygiena+pri+praci+s+pc&rlz=1C1GCEA_enSK850SK850&oq=hyg&aqs=chrome.0.69i59j69i60l3j69i57j0.1917j0j9&sourceid=chrome&ie=UTF-8