求翻译：四路智力抢答器由主体电路与扩展电路组成。优先编码电路、锁存器将参赛队的输入信号在显示器上输出，并通过发光二极管来显示抢答的选手；用控制电路和主持人开关启动报警电路，通过扬声器发声；以上两部分组成主体电路。通过定时电路将秒脉冲产生的信号在显示器上输出实现计时功能，构成扩展电路。是什么意思？

Four intelligence preemptive answer is made up of main circuit and Expander. Priority coding circuit, latch input signal output on a monitor team and led display which player; start alarm circuit and host switch control circuit, through loudspeakers audible; above two parts main circuit. By timing p

Intellectual answer 4 road from main circuit and expansion circuit. Priority coding circuit, Latching devices will be participating teams in the display, the input signal output and 2 light emitting diodes are adopted according to the players; use a control circuit and moderator switch to start circ

Four groups intelligences vie to answer first are composed by the main body electric circuit and the expander.First codes the electric circuit, the latch outputs the participating team input signal on the monitor, and through the light emitter diode demonstrated vies to answer first contestant; Star

Four intelligence preemptive answer is made up of main circuit and Expander. Priority coding circuit, latch input signal output on a monitor team and led display which player; start alarm circuit and host switch control circuit, through loudspeakers audible; above two parts main circuit. By timing p