ein elektr. Bauteil, das einen Stromkreis bei Überlastung unterbricht. In Schmelz-S. brennt bei überhöhtem Strom ein dünner, meist in Quarzsand eingebetteter Schmelzdraht durch. S.-Automaten enthalten einen Elektromagneten, durch dessen Spule der Verbraucherstrom fließt. Bei Überlast oder Kurzschluß löst der Elektromagnet die Arretierung einer Feder aus, die den Stromkreis unterbricht.
A duplicate of important information, such as a computer program or data, is a backup.
A duplicate copy of a program, a disk, or data, made either for archiving purposes or for safeguarding valuable files from loss should the active copy be damaged or destroyed. A backup is an “insurance” copy. Some application programs automatically make backup copies of data files, maintaining both the current version and the preceding version on disk. Also called: backup copy, backup file.
(Computer science) A copy of a file or directory on a separate storage device; SYN. computer backup.
A system, device, file or facility that can be used as an alternative in case of a malfunction or loss of data.
In computing, a copy file that is transferred to another medium, usually a floppy disc or tape. The purpose of this is to have available a copy of a file that can be restored in case of a fault in the system or the file itself. Backup files are also created by many applications (with the extension .BAC or .BAK); a version is therefore available of the original file before it was modified by the current application. SYN. back-up, back up.
ETYM For fusee, fusil a firelock.
1. Any device by which an explosive charge is ignited; SYN. fuze, fusee, fuzee, primer.
2. Can interrupt the flow of electrical current when it is overloaded; SYN. electrical fuse.
A circuit element that burns out or breaks when the current passing through it exceeds a certain level. A fuse protects a circuit from damage caused by excess current. It performs the same function as a circuit breaker, but it cannot be reset, so it must be replaced if it breaks. A fuse consists of a short length of wire of a specific composition and thickness; the thicker the wire, the more current it can pass before the wire melts and breaks the circuit.
In electricity, a wire or strip of metal designed to melt when excessive current passes through. It is a safety device to stop at that point in the circuit when surges of current would otherwise damage equipment and cause fires. In explosives, a fuse is a cord impregnated with chemicals so that it burns slowly at a predetermined rate. It is used to set off a main explosive charge, sufficient length of fuse being left to allow the person lighting it to get away to safety.
ETYM Old Fren. guarantie, garantie, French garantie, Old Fren. guarantir, garantir, to warrant, to guaranty, Eng. garantir, from Old Fren. guarant, garant, a warranter, French garant; of German origin, and from the same word as warranty. Related to Warrant, Warranty, Guarantee.
See.
1. Pass, safe-conduct; convoy, escort
2. A precautionary measure, stipulation, or device; a technical contrivance to prevent accident
ETYM Latin securitas: cf. French sécurité. Related to Secure, Surety.
1. Freedom from anxiety or fear.
2. Measures taken as a precaution against theft or espionage or sabotage etc.; SYN. security measures.
3. The state of being free from danger or injury.
4. Property that one's creditor can claim in case one defaults on one's obligation; SYN. surety.
5. Defense against financial failure; SYN. protection.
6. A guarantee that an obligation will be met; SYN. surety.
7. A formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends; SYN. certificate.
8. A department responsible for the security of the institutions property and workers.