The multi-purpose doorbell union actual user needs with modern society's demand design, the achievement to use one of intelligent products which the monolithic integrated circuit controls, opens a new domain in the monolithic integrated circuit design. This article main introduction new multi-purpose doorbell principle and characteristic.
In this design, we used the monolithic integrated circuit to control the multi-modules the way. The hardware part by the voice control module, the infrared detection module, the keyboard entry module, turns on the light the module and reports to the police the module five major part to be composed. The concrete implementation means are: Take monolithic integrated circuit AT89S52 as the core, through the keyboard to the monolithic integrated circuit input instruction, by the monolithic integrated circuit control pronunciation chip ISD1420 module, turns on the light again the module and reports to the police the module, outputs the different response result.
In the design process, in the hardware design has used the tool PROTEL99SE manufacture schematic diagram and the PCB board chart, in the software design has used the method which the module programs.
This article first introduced this system research significance in the introduction. In the 1st chapter, elaborated the system constitution theory, has determined the monolithic integrated circuit task definition. 2nd chapter introduced emphatically in the system uses the hardware chip function and the characteristic, the hardware circuit design, analyzed the process with emphasis in the 3rd chapter which the software designs, the 4th chapter is the product debugging, removes in the design the mistake, consummates the design. At last enclosed hardware schematic diagram, PCB board chart and total procedure.
Key word: Multipurpose Sing Chip Microcontroller ISD1420 pronunciation chip Reporting to the police Infrared Acquisition
