【實用教育app】Adobe Reader Tutorial|最夯免費app-綠色工廠好玩App

Adobe Reader is a software designed to securely view PDF documents. PDF stands for Portable Document Format and its biggest advantage is the fact that it has cross-platform compatibility. You can open a PDF file on a Linux computer, or Windows, or even on your mobile phone if it has Symbian. This format was created in 1993 by Adobe Systems, but because it was hard to make it popular in the beginning, Adobe decided to start releasing Adobe Reader for free, in order to beat the competition of other formats such as Common Ground Digital Paper, Envoy. Nowadays, PDF is the standard for printable documents and it's widely used for publishing e-books. PDF has undergone a lot of changes and updates, eight in total, corresponding to the number of Adobe Reader versions, with 8.0 being the latest one.