There is extensive application in the national economy and life in the lift . In order to adapt to the rapid development of the lift, our group has developed the control system of a lift . Because the rapid development and popularization of the one-chip computer, and adopt the single organization and become the control system, can lower costs greatly , make special-purpose control system into, solidification procedure, have strengthened privacy, improved dependability . But using the one-chip computer system should pay attention to strengthening the soft , hard anti- interference measure.
This text has introduced the making thought that the principle of the control system of the lift and control system of the lift are designed in detail , as master controller , add through 8031 one-chip computer some peripheral circuit ADC0809 , 8255 ,etc. control chip make up hardware disposition , lift of control system, and the design method of the software and anti- interference measure of the software and hardware.
All modern modems allow traffic in both directions at the same time (by using different frequencies for different directions). A connection that allows traffic in both directions simultaneously is called full duplex. A two-lane road is full duplex. A connection that allows traffic either way, but only one way at a time is called half duplex. A single railroad t