Intel is coming out with a 'Compute Stick' that is a full personal computer. It is about the size of a USB memory stick. On one end, the device has a full-size HDMI plug which attaches to your TV or monitor. On its side is a microUSB port which plugs into the wall for power using a standard USB cable. A second, full-size USB port allows you to attach peripherals and a microSD card slot provides for memory expansion.
Not to get too technical, but it is a quad-core Atom-powered mini PC
with 2GB of RAM, 32GB eMMC storage, running Windows 8.1. The price
when it comes out later this spring should be about US $150.
It also has a power button, and in addition to its USB port, it can
pair with a keyboard and mouse using Bluetooth. Since Bluetooth
sends a signal to about 30 feet, you can sit in your easy chair and
have the best of TV and PC on one device, with no extra wires or
gadgets. It also supports 802.11n Wi-Fi for connecting to the
Internet and your home network. Now you can have a real PC TV with a
keyboard, etc. No longer necessary to send YouTube videos from your
PC as they are already on the screen. Am very sure I need one of
these and hope by the time it is available I will be able to
explain/justify to myself why.