我需要文本框不复位输入新的选择。
I need the textbox NOT to reset as new selections are entered.
为管理芯片产生复位输入，其输入必须接收低有效的地信号，需要晶体管q 1导通。
To create an reset input to the supervisory chip, its input must receive an active-low ground signal, requiring transistor Q1 to turn on.
它的功能是当感应到输入电压界限时提供一个锁存开关，通过外部时钟信号完成复位。
Its function is to provide a latching switch action upon sensing an input threshold voltage, with reset accomplished by an external clock signal.
利用有源钳位电路实现主变压器铁心对称复位，功率开关在宽输入电压和宽负载电流范围内零电压开关。
By using an active clamp circuit, the power transformer core is symmetrically reset. Zero voltage switching conditions are achieved over a broad input voltage and output current range.
内容包括时基电路、预置延时电路、输入接口、总清及加电复位等。
It includes the time-base circuit, time set and delay circuit, input interface, clear and reset circuit etc.
然后，在正常工作中，可以配置MCLR引脚为外部复位或仅作为输入引脚。
Thereafter, in normal operation, you can configure the MCLR pin either as an external reset or as an input-only pin.
硬件上详细给出了系统主要功能模块的工作原理和设计内容，包括模拟信号输入电路、数字信号输入输出电路、看门狗及系统复位电路等。
On the hardware design we provide the operation principle of the main function module and design content in detail, including Analog Inputting, Digital Inputting and Outputting, Watchdog, etc.
硬件上详细给出了系统主要功能模块的工作原理和设计内容，包括模拟信号输入电路、数字信号输入输出电路、看门狗及系统复位电路等。
On the hardware design we provide the operation principle of the main function module and design content in detail, including Analog Inputting, Digital Inputting and Outputting, Watchdog, etc.
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