西南民族大学毕业设计 基于 8051 单片机的 8 路抢答器
Abstract
With the development of science and technology and popularization, all kinds of
competitions, including contest is more and more the role of more and more important.
This paper designed AT89S51 as the core in the zhuhai vies regulator, with digital
display direct instructions, automatic latch showed results, and automatic reset design
ideas, it can according to different contest input signal by MCU control, handle and
produce different with the input signal corresponding output signal, finally LED
digital pipe display by the corresponding points, even if the two groups of vies differs
a few microseconds, also time can distinguish which group of priority press buttons,
fully utilize the single-chip microcomputer system structure is simple, powerful, good
reliability and practicability strong characteristic.
This design is for the starting point. Responder Considering the set limit to answer
in 89S51 single-chip microcomputer and function, use of peripheral interfaces,
scare-answering system of the microcontroller timer/counter timing and numeration
principle, software and hardware organically, and makes the system can correctly to
the time, at the same time making digital tube can properly show time. With a switch
do keyboard output, the speaker happens hints. And the system can realize: in the
contest, only after beginning vies to effective, if at the start of the contest for the
invalid; former contest Full automatic reset and clock after the system master
mandatory reset; Key lock, in effective condition, buttons invalid illegal
【Key Words】vies to implement microcontroller LED digital
The timer/counters speaker .
