PawPrint.net Glossary of Terms

A set of detailed rules for communication between a client and server. This protocol is the foundation of data transmission on the www

A generic name for various kinds of dynamic random access memory: DRAM that are synchronized with the clock speed that the microprocessor is optimized for. This tends to increase the number of instructions that the processor can perform in a given time. The speed of SDRAM is rated in MHz rather than in nanoseconds (ns). This makes it easier to compare the bus speed and the RAM chip speed. You can convert the RAM clock speed to nanoseconds by dividing the chip speed into 1 billion ns (which is on...

An optical defect in a lens causing it to form an image that is not sharp or that is distorted in some way.

An address referring to a document on the Internet. This can be used to reference a web page via HTTP or a file to be accessed via FTP, for example. The reason for a URL (rather then just the address) is to define completely what a computer must do, and where it must go, to access a document (sometimes even on it´s local hard drive in the case of ´file:´)

The syntax of a URL consists of four elements:

Protocol://address/path/document - here are a few examples:

http://www.pawprint.net/in...

The opening of a lens that admits light. Except in very simple cameras, the Aperture can be varied in size by an adjustable  diaphragm, which regulates the amount of light passing through the lens. The relative Aperture is measured as the focal length of the lens divided by the diameter of the Aperture; this is expressed as an f-number: f/3, f/5, and so on.

Aperature has a dramatic effect on the Depth-of-field of the photograph.

Hypertext Markup Language is the Markup-Language that evolved as the basis for layout of web-pages. It is a derivitive of the first SGML languages and has since been superceeded by derivitives of XML refertred to as XHTML.