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.
Batteries Allowed in Checked Luggage. Except for spare (uninstalled) lithium batteries, and spillable wet cell batteries (the kind used in cars and motorcycles), all the batteries types allowed in carry-on baggage are also allowed in checked baggage.he information below will give you some idea of what is allowed and what is not allowed on an aircraft. Batteries Allowed in Carry-on Baggage. 1  Dry cell alkaline batteries such as your typical AA, AAA, C, D, 9-volt, or button sized batteries that power most common small electrical or electronic items.