Such as picture 1 Left two press three times 2 Right two press once and then press right one to start debugging "hour" 3 Right two press once and then press right one to start debugging "minute" 4 Right two press once and then press right one to start debugging "month" 5 Right two press once and then press right one to start debugging "day" 6 Right two press once and then press right one to start debugging "Sunday Monday...."7 Press the second right button once, then press the first right button to start debugging "seconds" 8, and finally press the second left button to confirm
Course experiment?Do it yourself.The general idea is to make a complex point counter. The counting part is completed with three carry counters in 60, 60, and 24. The timing part is made with several frequency dividers to divide the crystal oscillator into 1 hz, 1000 hz, 10 khz, 1 hz as the second timing frequency, 1000 hz as the digital tube sweep frequency, 10 khz as the buzzer frequency. Reset is zero clearing, and pause is to stop counting,The priority is set above the process, and the dial switch is the input enable. For example, you can set the low level to count normally, and the high level to continue to count. The counter input changes from 1hz to key count. At this time, the key directly controls the display module, and the alarm is to output a high frequency 10khz and drive the buzzer when the count reaches the setting.The questions in the college eda experiment are very simple. If you can't do it, just draw a graphic circuit, and then use VHDL to represent each module. You should learn VHDL. It's important to do it yourself
