Patents protect inventions. However, patents protect only certain inventions. In order to be patentable, an invention must fall within one of four categories of patent-eligible subject matter: ...

Computers have to be kept in a specific environment to function efficiently. Conditions such as heat, cold, dust and excessive humidity all can damage and lessen the performance of a computer.

“This memory can store light and operate at speeds beyond the reach of its electrical counterpart memory,” said Jaiswal.

This Q&A is part of a weekly series of posts highlighting common questions encountered by technophiles and answered by users at Stack Exchange, a free, community-powered network of 100+ Q&A sites.

Buying PC components at a store like Best Buy or Micro Center is easy. You pick what you want and take it to the register. You'll usually have the option to purchase a warranty, or at least to take ...