Graphics Tablet
It is usually referring to a flat metal ring that is used in conjunction with a nut and bolt. It can be used to distribute force to avoid the bolt pulling through the metal or wood. It also can be used in spacing and as a crude friction easing device.
Check out www.horizonmedical.com They have a portable with a Digital Flat Panel 14x17"
Flat panel. reGee
The purpose of using a lock washer in conjunction with a flat washer is to prevent the nut and bolt from loosening due to vibrations or other forces acting on the joint. The lock washer provides additional friction and helps to secure the connection more effectively than just using a flat washer alone.
A flat round portable metal disc with a plastic coating is likely a portable hard drive. This device is used to store and transfer digital information such as documents, photos, and videos. The plastic coating serves as protection for the metal disc inside.
Keyboard.
lifejacket
Yes, an output device.
"record player"
You do not need to use a newer flat screen television to use a digital television antenna. They should work with older tv sets if you have a converter box.
I suspect it means the battery is flat or the scale is broken.
The USA plug type for this electronic device is Type A, which has two flat parallel prongs.