ABSTRACT
Microcomputer (SCM) is widely used in the various areas because of its compact flexible, low cost, strong ability to control, easy using for product. Along with social development, the speed, size, performance indicators of SCM is facing new challenges. Meanwhile, the programmable logic device toward high density, high speed, low price of development, particularly the hardware description language such as VHDL, VerilogHDL has brought a reform of the traditional digital system description and design methods. Users made large and ultra-large-scale integrated circuits, etc. over and the dream is that things have now become a reality.
The topic is the use of rich resources, control of flexible man-machine dialogue and good function of SCM and minicomputer with internal restructuring. complex programmable chip CPLD is the perfect combination to achieve a digital clock timing. Using the C language function SCM time given its numerical CPLD. Verilog HDL completed accept SCM data sent and the digital data sent LED Display. For the microcontroller, LED clock completely equivalent static LED, SCM achieve the savings achieved savings MCU resources and reduce the SCM software spending.
