I would like to share my Pi with you
This is not about dessert, it's about small inexpensive computer boards that draw very little power.
In 2013 I purchased my first Raspberry Pi model B+ to partially replace an old laptop that I had been using.
The B+ was put into service as a media player.
I purchased a 19" TV, attached the Pi to the back and it has worked flawlessly since.
We watch movies most every night.
The TV Pi combo is portable as one unit with one cigarette lighter plug.
Together they draw ~ 12 watts of electricity.
My total cost ~$150
Last June I purchased another Raspberry Pi...the newest model 3.
After playing with it for a while, I put it to service as a signing computer.
I put it all together with a binder notebook, 4" HDMI display, and portable power supply.
The Pi and display were ordered online. Then I used rivets to attach them to the binder.
The power supply is secured with velcro and removable.
Once the operating system was setup (custom), I made an image and copied that image to other micro SD cards (the entire os is booted from the card and has no bios)
Now if I have to sign something it's a quick power on then sign, power off and destroy the micro SD card with prejudice.
Learn more about Raspberry Pi here: https://www.raspberrypi.org/