A computer operating system
used as an internet standard data transferring language; it was
developed in 1969 for ATT.
UHF.
Acronym for Ultra High
Frequency.
Ultrasonic.
The audio signals which can be
heard by the plain human ear; these audible frequencies start around 20
kHz.
USB.
Universal Serial Bus; a type of serial bus which has a bandwidth of
1.5 Mbps and it is used to plug computer components to a PC or
laptop; the USB technology allows connecting together up to 127
devices.
User account.
Used on networks or secure
computer systems; a unique access to a network and its resources.
User name.
A name chosen by a person
to identify him or herself in a network or online.
