An algorithm used in 3-D graphics to determine which objects, or parts of objects, are visible and which are hidden behind other objects. With Z-buffering, the graphics processor stores the Z-axis value of each pixel in a special area of memory called the Z-buffer . Different objects can have the same x- and y-coordinate values, but with different z-coordinate values. The object with the lowest z-coordinate value is in front of the other objects, and therefore that’s the one that’s displayed.
An alternate algorithm for hiding objects behind other objects is called Z-sorting. The Z-sorting algorithm simply displays all objects serially, starting with those objects furthest back (with the largest Z-axis values). The Z-sorting algorithm does not require a Z-buffer, but it is slow and does not render intersecting objects correctly.
- Zend Framework
Abbreviated as ZF, the Zend Framework is an open source object-oriented Web application framework implemented in PHP 5. The goal of ZF is to simplify Web development while maintaining object-oriented best practices for building Web 2.0 applications and Web services. The Zend Framework was developed by a large open-source community lead by Zend and its […]
- Zero-Day exploit
Called either Day Zero or Zero-Day, it is an exploit that takes advantage of a security vulnerability on the same day that the vulnerability becomes publicly or generally known. Zero-Day exploits are usually posted by well-known hacker groups. Software companies may issue a security bulletin or advisory when the exploit becomes known, but companies may […]
- Zero Administration Kit
Abbreviated as ZAK, the Zero Administration Kit is a Microsoft software kit designed for for Windows NT that allows network administrators to easily prevent some user actions, such as changes to desktop configurations, software installation, and other settings.
Short for zero configuration IP networking, a method of networking devices via an Ethernet cable without requiring configuration and administration. Zeroconf is able to allocate addresses without a DHCP server, translate between domain names and IP addresses without a DNS server, and find services, such as a printer, without a directory service. The technology is […]
Zeta is an operating system (OS) based on BeOS. Zeta is an attempt to update BeOS with support being added for new hardware, USB 2.0, VoIP, and other new support features. Zeta Version 1.0 was released in summer 2005. It has a large world-wide following, mainly based in Germany.