Short for Classless Inter-Domain Routing, an IP addressing scheme that replaces the older system based on classes A, B, and C. With CIDR, a single IP address can be used to designate many unique IP addresses. A CIDR IP address looks like a normal IP address except that it ends with a slash followed by a number, called the IP network prefix.For example:
The IP network prefix specifies how many addresses are covered by the CIDR address, with lower numbers covering more addresses. An IP network prefix of /12,for example, can be used to address 1,048,576 former Class C addresses.
CIDR addresses reduce the size of routing tables and make more IP addresses available within organizations.
CIDR is also called supernetting.
In magnetic disk drive storage technology, the fluctuation of magnetization due to thermal agitation. When the areal density — the number of bits that can be stored on a square inch of disk media — of a disk medium reaches 150 gigabits per square inch, the magnetic energy holding the bits in place on the […]
Refers to microprocessor architectures that enable more than one instruction to be executed per clock cycle. Nearly all modern microprocessors, including the Pentium, PowerPC, Alpha, and SPARC microprocessors are superscalar.
A symbol or character that appears slightly above a line, as in this example: r2. Footnote numbers appearing in text are also superscripts. A symbol or character that appears slightly below a line is called a subscript.
A technique for improving LCD display screens by twisting light rays. In addition to normal supertwist displays, there also exist double supertwist and triple supertwist displays. In general, the more twists, the higher the contrast. Supertwist displays are also known as supertwist nematic (STN) displays.
- supplemental index
In search engines, a supplemental index is comprised of Web results compiled with fewer restraints on sites than sites that are crawled for a main search engine index. Google is one search engine that uses both a main index and a supplemental index. In some instances restrictions for inclusion in the main index may be […]