AVR单片机中的IO口的结构描述，可以让使用者了解该单片机的电气特性。-The AVR microcontroller IO port Schema, allows the user to understand the electrical characteristics of the microcontroller.

vmware存储IO控制。 在vsphere环境下，当存储IO性能达到顶峰时，如何有效的控制IOps的大小，不至于将存储写爆了。-vmware storage IO control. In vsphere environment, when the storage IO performance peaked IOps how to effectively control the size, not the memory write burst.

vmware 网络IO流量控制 vmware vsphere 网络管理，在网络流量过大时，需要控制每个vlan的总使用流量。-vmware vmware vsphere network IO traffic control network management, the amount of traffic in the network, the need to control the overall use of each vlan traffic.