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| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
U
| Ultra high frequency (UHF) | Ultrahohe frequenz | A
specific range of radio waves having wavelengths approximately between 10
and 100 cm. |
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| Uncommitted logic array (ULA) | Neutrale logic matrix | A
chip on which there are sets of logic circuits that have not yet been
connected together. Each set
is complete in itself but has to be linked to the others by one or more
connections. |
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| Underflow | Unterloup | The
generation of a number, e.g. by division which is too small for the
computer to store. |
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| Unicode | Unicode | A
character set developed by Microsoft and based on a two byte structure
which gives a potential basic set of nearly 70,000 characters compared
with ASCII'S 256. |
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| UNIX | UNIX | An
operating system developed by Bell Laboratories with the object of
improving software portability. |
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| Update | Aktualisieren | The
process of changing a program package or file so as to bring it up to
date. |
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| Upgrade | Erhieitern | The
improvement of a piece of hardware, software or firmware, often an option
given to the purchaser which can be taken up at a later date. |
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| User group | Anwender Gruppe | A
group of people who meet or correspond regularly because of their interest
in a particular machine or suite of programs. |
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| User port | Braucherhafen | A
socket on the microcomputer's casing which allows the user to connect
additional equipment, e.g. printers, scanners. |
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| Utility programs | Nutzung programme | Programs
designed to assist an operator to perform particular tasks such as listing
a file held on magnetic tape or disk, or copying data from one disk to
another prior to a program run. |
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