The Onscreen Keyboard - Acer Iconia One 8 User Manual

18 - Using your tablet
locations where you might have images stored, such as Google Drive,
Gallery, Dropbox, and others.

The onscreen keyboard

When you tap a text box to enter text, an onscreen keyboard will
appear. Simply tap on keys to enter text.
Note
The layout of the keyboard (and some button icons) vary slightly, depending
on the application and information that is required.