Internet Terminology


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RAM - random access memory
is the place in a computer where the operating system, application programs, and data in current use are kept so that they can be quickly reached by the computer's process. RAM is much faster to read from and write to than the other kinds of storage in a computer.

RAID -redundant array of independent disks
is a way of storing the same data in different places (thus, redundantly) on multiple hard disk. By placing data on multiple disks, I/O operations can overlap in a balanced way, improving performance.

Relational Database
is a set of tables containing data fitted into predefined categories. Each table (which is sometimes called a relation) contains one or more data categories in columns. Each row contains a unique instance of data for the categories defined by the columns. For example, a typical business order entry database would include a table that described a customer with columns for name, address, phone number, and so forth. Another table would describe an order: product, customer, date, sales price, and so forth. A user of the database could obtain a view of the database that fitted the user's needs. For example, a branch office manager might like a view or report on all customers that had bought products after a certain date. A financial services manager in the same company could, from the same tables, obtain a report on accounts that needed to be paid.





RGB (Red, Green, and Blue)
a system for representing the colors to be used on a computer display. Red, green, and blue can be combined in various proportions to obtain any color in the visible spectrum. Levels of R, G, and B can each range from 0 to 100 percent of full intensity. Each level is represented by the range of decimal numbers from 0 to 255 (256 levels for each color), equivalent to the range of binary numbers from 00000000 to 11111111, or hexadecimal 00 to FF. The total number of available colors is 256 x 256 x 256, or 16,777,216 possible colors.

Router
a device or, in some cases, software in a computer, that determines the next network point to which a packet should be forwarded toward its destination. The router is connected to at least two networks and decides which way to send each information packet based on its current understanding of the state of the networks it is connected to. A router is located at any gateway (where one network meets another), including each Internet point-of-presence. A router is often included as part of a network switch.

runtime
when a program is running (or being executable).

ripper
In digital audio technology, a program that moves a sound sequence from a compact disk onto a computer hard drive as a Wave file, often as a step toward converting it to an MP3-encoded file. The program that converts the WAV file to an MP3 file is known as an encoder. The program that plays the MP3 file is called a player. Some audio products provide all three programs together as a package.

resolution
the number of pixel (individual points of color) contained on a display monitor, expressed in terms of the number of pixels on the horizontal axis and the number on the vertical axis. The sharpness of the image on a display depends on the resolution and the size of the monitor. The same pixel resolution will be sharper on a smaller monitor and gradually lose sharpness on larger monitors because the same number of pixels are being spread out over a larger number of inches.





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