CPU是工控主板很重要的組成部件，主要包括運算邏輯部件、寄存器部件和控制部件等。在安裝CPU的時候，在攢機(jī)或者更滑cpu芯片的時，cpu芯片應(yīng)該如何安裝到主板上呢。 CPU的安裝過程大家在將主板裝進(jìn)機(jī)箱前先將CPU和內(nèi)存安裝好，以免將主板安裝好后機(jī)箱內(nèi)狹窄的空間影響CPU等的順利安裝。
第一步，稍向外/向上用力拉開CPU插座上的鎖桿與插座呈90度角，以便讓CPU能夠插入處理器插座。
第二步，然后將CPU上針腳有缺針的部位對準(zhǔn)插座上的缺口。
第三步，CPU只能夠在方向正確時才能夠被插入插座中，然后按下鎖桿。
第四步，在CPU的核心上均勻涂上足夠的散熱膏（硅脂）。但要注意不要涂得太多，只要均勻的涂上薄薄一層即可。
CPU的安裝一般很簡單，但CPU風(fēng)扇的安裝較復(fù)雜，其步驟如后：
第一步，首先在主板上找到CPU和它的支撐機(jī)構(gòu)的位置，然后安裝好CPU。
第二步，接著將散熱片妥善定位在支撐機(jī)構(gòu)上。
第三步，再將散熱風(fēng)扇安裝在散熱片的頂部——向下壓風(fēng)扇直到它的四個卡子鍥入支撐機(jī)構(gòu)對應(yīng)的孔中；
第四步，再將兩個壓桿壓下以固定風(fēng)扇，需要注意的是每個壓桿都只能沿一個方向壓下。
以上內(nèi)容就是工控主板安裝CPU的操作步驟。安裝起來其實不難，最主要的是注意涂散熱膏或加塊散熱墊，避免燒毀處理器。
As noted earlier, user applications are not allowed to communicate with hardware directly because that would require supervisor privileges on the processor, such as executing special instructions or handling interrupts. Applications utilizing a specific hardware device typically operate on kernel drivers exposed via nodes in the /dev directory.
Device nodes are called pseudofiles: they look like files; applications can also open() or close() them; but when they are read or written, the data comes from or is passed to the device nodes' associated driver. This level of abstraction is handled by the virtual file system (VFS) inside the Linux kernel. Besides read(), write(), or poll(), user applications may also interact with a device using ioctl() (input/output control).
In addition to the device nodes, applications may also utilize file entries in /sys, a sysfs virtual file system that exports information about devices and drivers, including parent/child relationship or association to a specific class or bus, from the kernel device model to user space. /sys is also heavily used for device configuration, especially when the driver in question registers with a device driver core, which exports only its standardized set of functionality to the user.