DBpedia – Linked Data Fragments

Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Keyboard_controller_(computing)> ?p ?o }

• Keyboard_controller_(computing) abstract "In computing, a keyboard controller is a device that interfaces a keyboard to a computer. Its main function is to inform the computer when a key is pressed or released. When data from the keyboard arrives, the controller raises an interrupt (a keyboard interrupt) to allow the CPU to handle the input.If a keyboard is a separate peripheral system unit (such as in most modern desktop computers), the keyboard controller is not directly attached to the keys, but receives scancodes from a microcontroller embedded in the keyboard via some kind of serial interface. In this case, the controller usually also controls the keyboard's LEDs by sending data back to keyboard through the wire.The IBM PC AT used an Intel 8042 chip to interface to the keyboard. This computer also controlled access to the A20 line in order to implement a workaround for a chip bug in the Intel 80286. The keyboard controller was also used to initiate a software CPU reset in order to allow the CPU to transition from protected mode to real mode because the 286 did not allow the CPU to go from protected mode to real mode unless the CPU is reset. This was a problem because the BIOS and the operating system services could only be called by programs in real mode. These behaviors have been used by plenty of software that expects this behavior, and therefore keyboard controllers have continued controlling the A20 line and performing software CPU resets even when the need for a reset via the keyboard controller was obviated by the Intel 80386's ability to switch to real mode from protected mode without a CPU reset. The keyboard controller also handles PS/2 mouse input if a PS/2 mouse port is present. Today the keyboard controller is either a unit inside a Super I/O device or is missing, having its keyboard and mouse functions handled by a USB controller and its role in controlling the A20 line handled by the chipset.".
• Keyboard_controller_(computing) thumbnail AT_hauptplatine_stromanschluss.jpg?width=300.
• Keyboard_controller_(computing) wikiPageExternalLink mXsstsv.pdf.
• Keyboard_controller_(computing) wikiPageExternalLink keyboard-controller.
• Keyboard_controller_(computing) wikiPageID "28462588".
• Keyboard_controller_(computing) wikiPageLength "3107".
• Keyboard_controller_(computing) wikiPageOutDegree "29".
• Keyboard_controller_(computing) wikiPageRevisionID "645254436".
• Keyboard_controller_(computing) wikiPageWikiLink A20_line.
• Keyboard_controller_(computing) wikiPageWikiLink Category:Computing_input_devices.
• Keyboard_controller_(computing) wikiPageWikiLink Central_processing_unit.
• Keyboard_controller_(computing) wikiPageWikiLink Computer.
• Keyboard_controller_(computing) wikiPageWikiLink Computer_case.
• Keyboard_controller_(computing) wikiPageWikiLink Computer_keyboard.
• Keyboard_controller_(computing) wikiPageWikiLink Computer_mouse.
• Keyboard_controller_(computing) wikiPageWikiLink Controller_(computing).
• Keyboard_controller_(computing) wikiPageWikiLink Desktop_computer.
• Keyboard_controller_(computing) wikiPageWikiLink Embedded_controller.
• Keyboard_controller_(computing) wikiPageWikiLink AT.
• Keyboard_controller_(computing) wikiPageWikiLink Intel_80286.
• Keyboard_controller_(computing) wikiPageWikiLink Intel_80386.
• Keyboard_controller_(computing) wikiPageWikiLink Intel_MCS-48.
• Keyboard_controller_(computing) wikiPageWikiLink Interrupt.
• Keyboard_controller_(computing) wikiPageWikiLink KVM_switch.
• Keyboard_controller_(computing) wikiPageWikiLink Keyboard_buffer.
• Keyboard_controller_(computing) wikiPageWikiLink Light-emitting_diode.
• Keyboard_controller_(computing) wikiPageWikiLink Microcontroller.
• Keyboard_controller_(computing) wikiPageWikiLink Model_F_keyboard.
• Keyboard_controller_(computing) wikiPageWikiLink 2_port.
• Keyboard_controller_(computing) wikiPageWikiLink Peripheral.
• Keyboard_controller_(computing) wikiPageWikiLink Protected_mode.
• Keyboard_controller_(computing) wikiPageWikiLink Real_mode.
• Keyboard_controller_(computing) wikiPageWikiLink Scancode.
• Keyboard_controller_(computing) wikiPageWikiLink Serial_communication.
• Keyboard_controller_(computing) wikiPageWikiLink O.
• Keyboard_controller_(computing) wikiPageWikiLink File:AT_hauptplatine_stromanschluss.jpg.
• Keyboard_controller_(computing) wikiPageWikiLinkText "Keyboard controller (computing)".
• Keyboard_controller_(computing) wikiPageWikiLinkText "Keyboard controller".
• Keyboard_controller_(computing) wikiPageWikiLinkText "control circuitry".
• Keyboard_controller_(computing) wikiPageWikiLinkText "controller".
• Keyboard_controller_(computing) wikiPageWikiLinkText "keyboard controller (computing)".
• Keyboard_controller_(computing) wikiPageWikiLinkText "keyboard controller".
• Keyboard_controller_(computing) wikiPageWikiLinkText "keyboard interface".
• Keyboard_controller_(computing) wikiPageWikiLinkText "keyboard interrupts".
• Keyboard_controller_(computing) wikiPageUsesTemplate Template:!.
• Keyboard_controller_(computing) wikiPageUsesTemplate Template:Compu-hardware-stub.
• Keyboard_controller_(computing) wikiPageUsesTemplate Template:Other_uses.
• Keyboard_controller_(computing) wikiPageUsesTemplate Template:Refimprove.
• Keyboard_controller_(computing) subject Category:Computing_input_devices.
• Keyboard_controller_(computing) hypernym Device.
• Keyboard_controller_(computing) type Device.
• Keyboard_controller_(computing) comment "In computing, a keyboard controller is a device that interfaces a keyboard to a computer. Its main function is to inform the computer when a key is pressed or released.".
• Keyboard_controller_(computing) label "Keyboard controller (computing)".
• Keyboard_controller_(computing) sameAs Q6398227.
• Keyboard_controller_(computing) sameAs m.0crj0gj.
• Keyboard_controller_(computing) sameAs Q6398227.
• Keyboard_controller_(computing) wasDerivedFrom Keyboard_controller_(computing)?oldid=645254436.
• Keyboard_controller_(computing) depiction AT_hauptplatine_stromanschluss.jpg.
• Keyboard_controller_(computing) isPrimaryTopicOf Keyboard_controller_(computing).