Ключевые слова: background, block, book, business, button, clicking, commercial, computer, cyberspace, device, digital, display, ebook, electronic, enter, ereader, female, finger, grey, hand, information, interface, internet, key, laptop, media, mobile, mobility, modern, monitor, multimedia, notepad, pad, pc, personal, portable, press, screen, selecring, smart, tablet, technology, touch, touchpad, virtual, visual,