Description: Design a timer for a basketball match. Requirements:
(1) the timer time is 24 seconds and the timer is reduced by 1 second every second.
(2) the timer time is displayed with two digital tubes;
(3) set two external control switches, switch K1 control the direct reset/start time of the timer, switch K2 control timer pause/continuous time; When the timer decreases to zero (i.e., timing time), the timer stays zero and sends an alarm signal, indicating the alarm signal with a light-emitting diode.
(4) the frequency of input clock pulse is 50MHz.
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| Filename | Size | Date |
|---|
| 1.docx | 27681 | 2017-12-18 |
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