Abstract:The AT89C2051 chip design at the core,with the necessary peripheral circuits,designed a simple digital clock, it is powered by 5V DC power supply. In terms of hardware, in addition to CPU, the use of four LED Seven-Segment LED display, LED used is a dynamic scan showed that the use of 9014 to drive the chip. Through more accurate debug LED can display hours, minutes. Three simple keys to achieve the adjustment of time. Software using assembly language programming. The entire electronic time clock system to complete the display, transfer, the timing clock and reset functions.
Software using assembly language programming, the use of online SLISP software programmer procedures, involving a single-chip timing and the use of interruptions.
Key words: Single-chip ; temperature; display ;SLIS