Search results
Results from the WOW.Com Content Network
A process control block (PCB), also sometimes called a process descriptor, is a data structure used by a computer operating system to store all the information about a process. When a process is created (initialized or installed), the operating system creates a corresponding process control block, which specifies and tracks the process state (i ...
This is a list of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses.Software that fits the Free Software Definition may be more appropriately called free software; the GNU project in particular objects to their works being referred to as open-source. [1]
FreePCB is a printed circuit board (PCB) electronic design automation program for Microsoft Windows, written by Allan Wright. It is free and open-source software released under a GNU General Public License.
The critical parts of the OS run in kernel mode, while other software (such as system utilities and application programs) run in user mode. This serves as the fundamental distinction between the OS and other system software. The part of the system executing in the kernel mode is called the kernel, or nucleus, of the OS. The kernel is designed ...
Hardware design (i.e. mechanical drawings, schematics, bills of material, PCB layout data, HDL source code [2] and integrated circuit layout data), in addition to the software that drives the hardware, are all released under free/libre terms. The original sharer gains feedback and potentially improvements on the design from the FOSH community.
In embedded systems, a board support package (BSP) is the layer of software containing hardware-specific boot loaders, device drivers and other routines that allow a given embedded operating system, for example a real-time operating system (RTOS), to function in a given hardware environment (a motherboard), integrated with the embedded operating system.
PCB was first written by Thomas Nau for an Atari ST in 1990 and ported to UNIX and X11 in 1994. Initially PCB was not intended to be a professional layout system but as a tool for individuals to do small-scale development of hardware. [1] [3] The second release 1.2 introduced user menus. This made PCB easier to use and increased its popularity. [1]
A block diagram is a diagram of a system in which the principal parts or functions are represented by blocks connected by lines that show the relationships of the blocks. [1] They are heavily used in engineering in hardware design , electronic design , software design , and process flow diagrams .