List of computer size categories. From Wikipedia, the free encyclopedia. This illustration shows the development of computers, from huge room-sized computers in the 1940s and 1950s (left-most photo) to smaller personal computers over the 1980s to the 2010s.
New US DOT Hazmat Safety Rule to Place Lithium Battery Limits in Carry-on Baggage on Passenger Aircraft Effective January 1, 2008. Passengers will no longer be able to pack loose lithium batteries in checked luggage beginning January 1, 2008 once new federal safety rules take effect.
1 If you need to pack a spare battery for a scooter or wheelchair, you must advise the aircraft operator so that the battery can be properly packaged for air travel. 2  Spare lithium batteries (both lithium metal and lithium ion/polymer) are prohibited in checked baggage.ere is the breakdown on what batteries are allowed and prohibited in carry-on and checked bags, along with some packing tips for safe travel with batteries: Batteries Allowed in Carry-on Bags: 1  Dry cell alkaline batteries; typical AA, AAA, C, D, 9-volt, button sized cells, etc.