基于单片机的八路智能抢答器的毕业设计(3)

Introduction The intelligent vies to answer first as a kind of electronic products have been widely applied in all kinds of intelligence and knowledge competition situation. But using the current is some complicated circuit vies to answer first, do not facilitate production, and reliability, low difficult to achieve; Others use some special integrated chips, and the purchase of the special integrated chips and very difficult. In order to adapt to the needs of the many players vies to answer first activities and design a intelligent vies to answer first device, this vies to answer first instruments have circuit is simple, components, easy to buy ordinary etc, and solves the difficult and hard to buy makers make the problem. This system is AT89C51 microcontroller as the core and the design of the intelligent vies to answer first 8.

According to the function, intelligent vies to answer first the vies to answer first the design requirements of the following: vies to answer first is also for 8 contestants or 8 teams game; host can through the intelligence is set button vies to answer first each question time and answer the vies to answer first time; have reset and illegal vies to answer first control function, set up a system to eliminate and vies to answer first, and by a host control switch control; when the host to start "start" button, the timer vies to answer first to reduces the time, vies to answer first time after running prohibit contest; countdown 5 seconds, if still no contest, then system every 1 s alarm once, to tip competitors; vies to answer first instruments have lock to save and display function. That's according to the button, lock to save the corresponding player of the entries, and the Numbers LED digital display, on the player vies to answer first shall give priority lock to save, the other key cannot respond to fair to choose the first vies to answer first; contestants in the set period of time vies to answer first, vies to answer first effectively, on the monitor demonstrated contestant's Numbers, and at the same time into the answer problem of the time countdown; during the countdown, the host would like to stop the countdown,can press the "stop" button, the system will automatically enter the state.

The system USES the software and hardware of the method of combining and design, including hardware design are borrowed from the single-chip microcomputer AT89C51 as the center control module, the modular design division, with six module, respectively is: the core control module, the power modules, clock and reset module, key input module, display module, alarm module. The software design is the common assembly language programming.

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