当计算机的某个部分必须被直接控制时，如监视器上的单个点或者流向打印机的单个字符，这时也使用汇编语言。
Assembly languages are also used when some part of the computer has to be controlled directly, such as individual dots on a monitor or the flow of individual characters to a printer.
该演示(针对初学者)可让您了解典型台式计算机的各个部件：主机、监视器、鼠标、键盘、打印机和扬声器。
This demo, aimed at beginners, takes you on a tour of the parts of a typical desktop computer: the case, monitor, mouse, keyboard, printer, and speakers.
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