Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Typical architecture of modern desktop PCs. Central processing unit (CPU) reads memory directly from the fastest cache, which, if the data is unavailable reads from the slower random access memory (RAM) and if needed from the biggest but slowest hard disk drive (HDD).
