digital tablet
デジタルタブレット
background
book
bookshelf
copy space
display
download
ebook
education concept
electronic
gadget
hardcover
history
idea
information
internet
knowledge
learn
library
literature
mockup
modern
new
no people
old book
online
paper
portable
read
screen
search
smartphone
study
technology
textbook
touch screen
university
web
wireless technology
workplace