Which calculation plc cpu modules ten modules

CPU has the basic functions of the following four areas:
1 This refers to the sequence control instruction execution order control program instructions. There is between each instruction in Nanda plc IO module  the program's strict order, the order must be in strict accordance with the procedural requirements of the execution, in order to ensure the correctness of the computer work.
2 the function of controlling the operation of an instruction executed by a computer is often a component in a sequence of actions to achieve. CPU according to these instructions, to produce the corresponding operation control signals sent to the corresponding components to  Nanda plc program logic controller control these components according to the requirements of directive action.
3 Time Control Time Control is the timing of the implementation of a variety of operating time. During the execution of an instruction, and at what time to do what action should be strictly controlled. Only in this way, the computer can automatically work methodically.
4 data encryption for data that arithmetic and Nanda plc input output modules  logical operations, or other information processing.