Title Design of timekeeping control circuit Based on MCS—51 _
Abstract In this paper, the design of a control circuit for timekeeping, with practicality. Timekeeping control system of AT89C51 microcontroller to control the core, using the four buttons to adjust the time and 12/24 hour conversion settings, indicates that the program uses a common cathode dynamic LED display, timing program with the timing of the internal microcontroller software. Selection of typical parallel port scan display output, AT89C51-P2 port as output port, from left to right order, minutes, seconds; low four P0 port as four function key keyboard lines, respectively, to adjust the time and 12/24 conversion set. This paper describes the hardware interface and module functions used in the design, a detailed description of the introduction of the hardware, software modules of the system, and design debug. The design of the hardware circuit, the functional modules of the software to complete the preparation.
Keywords microcontroller timekeeping control dynamic display module
