start bit
<protocol>
A bit which signals the start of transmission of a character on a serial line. For an RS-423 signal, the line is normally at logical zero which there is no data and the start bit is a logical one. The zero-one transition tells the receiver when to start sampling the signal to extract the data bits.
[Is this upside-down?]Last updated: 1995-02-02
start of authority
(SOA) A type of resource record used by the Domain Name System (DNS) to give metadata about a set of domain name data (the contents of a "zone file"). An SOA record has the following parameters:
Serial: the zone serial number - a version number for the zone file. Refresh: the number of seconds between update requests from secondary and slave name servers. Retry: the number of seconds the secondary or slave will wait before retrying when an attempt fails. Expire: (time to live - TTL) the number of seconds a master or slave will wait before considering cached data out-of-date. Minimum: previously used to determine the minimum TTL, this offers negative caching.Last updated: 2007-05-11
Start Of Header
[What header?]Last updated: 1996-05-31
Start Of Text
Last updated: 1996-05-31
start tag
tagNearby terms:
Starset ♦ STARSYS ♦ start bit ♦ start of authority ♦ Start Of Header
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