Unix
OS multiuser and multitasking developed in 1969 by Ken Thompson and Dennis Ritchie, within Bell Labs, entity owned at the time by AT & T and its subsidiary Western Electric.
This system has undergone many changes, whose primary was his writing in C language in the first half of 1970, which facilitated the carrying on of any type Processor. Most major manufacturers have subsequently offered their own version of Unix: IBM AIX, HP-UX from Hewlett-Packard and Solaris from Sun, etc..
Upload
Transfer data or programs a computer local to a central or remote computer over a network.
URL
(Uniform Resource Locator)
It represents the address by which a site is accessible.
USB
Acronym for Universal Serial Bus Universal Serial Bus. Bus standard for connecting hot-compatible external devices. It can connect up to 127 devices at once (in theory). The USB offers flow theoretical 12 Mbps in version 1.1 and 480 Mbps in version 2.0.
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