- Industry: Computer; Software
- Number of terms: 54848
- Number of blossaries: 7
- Company Profile:
Apple Inc., formerly Apple Computer, Inc., is an American multinational corporation headquartered in Cupertino, California, that designs, develops, and sells consumer electronics, computer software and personal computers.
An absolute measure of RMS voltage level in decibels relative to 0.775 Volts RMS. dBu measurements assume a circuit load with infinite impedance. See also RMS.
Industry:Software; Computer
In OpenGL, block of memory used to store a depth value for each pixel. The depth buffer is used to determine whether or not a pixel can be seen by the observer. Those that are hidden are typically removed.
Industry:Software; Computer
A user-driven installation process. Users drag a product’s files to a location of their choosing in their file system. Compare window.
Industry:Software; Computer
A component of an operating system that deals with getting data to and from a device, as well as the control of that device. A driver written with the I/O Kit is an object that implements the appropriate I/O Kit abstractions for controlling hardware.
Industry:Software; Computer
In BSD, a device file is a special file located in/devthat represents a block or character device such as a terminal, disk drive, or printer. If a program knows the name of a device file, it can use POSIX functions to access and control the associated device. The program can obtain the device name (which is not persistent across reboots or device removal) from the I/O Kit.
Industry:Software; Computer
In the I/O Kit, a mechanism that uses a plug-in architecture to allow a program in user space to communicate with a nub in the kernel that is appropriate to the type of device the program wishes to control. Through the nub the program gains access to I/O Kit services and to the device itself. From the perspective of the kernel, the device interface appears as a driver object called a user client.
Industry:Software; Computer
To translate a range of memory in one address space (physical or virtual) to a range in another address space. The virtual-memory manager accomplishes this by adjusting its VM tables for the kernel and user processes.
Industry:Software; Computer
Interrupt priority level. A means of basic synchronization on uniprocessor systems in traditional BSD systems, set using thesplmacro. Interrupts with lower priority than the current IPL are not acted upon until the IPL is lowered. In many parts of the kernel, changing the IPL in Mac OS X is not useful as a means of synchronization. New use ofsplmacros is discouraged. See also spl macro.
Industry:Software; Computer
Information retrieval. The process of locating information based on a well-defined information need. An information retrieval system consists of a corpus, one or more indexes of its content, a query interface, a search system, and a results interface.
Industry:Software; Computer
