计算机之间的通讯(内部控制) 在一个多计算机系统中,各个计算机互相配合来解决一个问题。在这种情况下,每台计算机在工作的过程中必须能够有效地互相进行通讯。每台计算机不但控制本身的工作程序,而且必须随时与系统中的其他计算机交换控制信息。例如在图4中,主计算机能够向辅助计算机提出要求,要它执行某些特殊的工作。辅助计算机接到这个要求后必须能够执行这项工作,并且完成之后通知主 Communication Between Computers (Internal Control) In a multi-computer system, computers work together to solve a problem. In this case, each computer must be able to communicate effectively with one another during work. Each computer not only controls its own working procedures, but also must exchange control information with other computers in the system at any time. For example, in Figure 4, the host computer is able to ask the secondary computer for some special work to do. The secondary computer must be able to perform this task upon receipt of this request, and notify the host upon completion