Input controller

Manufacturers of CPUs make their CPUs to be general-purpose processors, which means they shouldn’t be designed to work with just one specific type of input device (e.g. a specific make of keyboard or mouse). Instead, they need to be designed to work with anything that follows the standard protocol for that input device.

To do this, the motherboard has lots of little circuits called input controllers that are designed to work with specific types of input devices. For example, there will be a keyboard controller that is designed to work with any keyboard that follows the standard keyboard protocol, and a mouse controller which does the same for mice. These controllers are connected to the processor via the buses, so the processor can receive input from the input devices and only have to understand one way of communicating with them.

An input controller is a circuit which processes the input from a specific type of input device, and sends it to the processor in a standard way that the processor can understand.

flashcards

QuestionAnswer
CPU設計上為何需要輸入控制器？因為CPU是通用處理器，不專門為某一特定輸入設備設計，必須透過遵循標準協定的輸入控制器來與各種輸入設備溝通。
什麼是輸入控制器（input controller）？一種專門處理特定類型輸入設備訊號的電路，它會將輸入以處理器能理解的標準方式傳送給處理器。
主機板上的鍵盤控制器和滑鼠控制器有什麼功能？它們分別負責處理任何遵循標準鍵盤協定或標準滑鼠協定的裝置，並將輸入資料透過匯流排傳送給處理器。
輸入控制器與處理器之間如何連接？透過電腦匯流排（[[computer bus
處理器如何接收來自不同輸入裝置的資料？處理器只需理解與各輸入控制器之間的單一溝通標準，由輸入控制器負責轉譯不同裝置的輸入協定。