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A hardware port is an outlet on a piece of equipment into which a plug or cable connects. For instance, most home computers have a keyboard port, into which the keyboard is connected. Hardware ports can almost always be divided into two groups: Those that send and recieve one bit at a time via a single wire are called serial ports, and those that send multiple bits at the same time over a set of wires are called parallel ports.
Port trunking is a technology that allows multiple hardware ports to be aggregated into a single group, effectively creating a single connection with a higher bandwidth. This technology also provides a higher degree of fault tolerance.
A network port is an interface for communicating with a computer program over a network. Network ports are usually numbered and a network implementation like TCP or UDP will attach a port number to data it sends; the receiving implementation will use the attached port number to figure out which computer program to send the data to.
In TCP and UDP the combination of a port and a network address ( IP-number) is called a socketA socket generally designates a cavity or region used for fitting and connecting some specific device. Physical sockets Electrical sockets A CPU socket is a physical and electrical specification of how to connect a CPU to a motherboard. In electronics, a: e.g. the list of well-known ports (computing)IANA is responsible for assigning port numbers to specific uses. The well-known ports are those in the range 0-1023. On Unix-derived operating systems, opening a port in this range to receive incoming connections requires root privileges. Registered port
Nearly all processor families use the same assembly instructions for both memory access and hardware I/OIn computing, a hardware register is a storage area for hardware I/O (input/output) of different kinds. The hardware register is contained within a certain peripheral unit, and presented to the central processing unit of the computer by means of memory-ma (see memory-mapped I/OMemory-mapped I/O MMIO and port I/O (also called port-mapped I/O or PMIO are two complementary methods of performing input/output between the CPU and I/O devices in a computer. Memory-mapped I/O uses the same bus to address both memory and I/O devices, an for details). However, Intel microprocessorsThis list of Intel microprocessors attempts to present all of Intel's processors (µPs) from the pioneering 4-bit 4004 (1971) to the present high-end offerings, the 64-bit Itanium 2 (2002) and Pentium 4F with EM64T (2004). Concise technical data are given have assembly instructions (IN and OUT) that are used specifically for hardware I/O. These instructions figure out which hardware device to communicate with using the concept of an I/O port or machine port. These ports are numbered based on which hardware device they refer to.
Intel microprocessors generally allow one octetAn octet in general, is a group consisting of eight (8) elements. It has a more specific meaning in several fields. Music In music, an octet is a musical ensemble consisting of eight musicians. The two best known octets in classical music are probably tho (byte) to be sent or received during each instruction. The hardware device decides how to interpret data sent to it and what data to send to the processor. For example, a common use is to ask a hardware device which byte (in a data transfer) it will be sending next.
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