↓配件图
Component photo
↓元件清单
Component list
↓焊接330Ω电阻器。无正负极。
Solder 330Ω resistor. No positive and negative poles.
↓安装一部分将一部分元件引脚剪去，再安装下一部分。
Cut off some component pins before installing the next part.
↓安装10KΩ电阻器，无正负极。
Install a 10KΩ resistor without positive and negative poles.
↓安装装晶振和22P瓷片电容，不用分区正负极。
Install the crystal and 22P ceramic capacitors without partitioning positive and negative.
↓安装104瓷片电容，无正负极。
Install 104 ceramic capacitors without positive and negative poles.
↓安装1220电池扣。
Install 1220 battery buckle.
↓安装IC座，注意缺口位置对应电路板带标记的位置。
Install the IC holder. Note that the position of the notch corresponds to the marked position on the circuit board.
↓安装S8550三极管。如图所示。
Install the S8550 triode. as the picture shows.
↓安装轻触开关，如图所示。
Install the touch switch as shown.
↓安装蜂鸣器。长脚是正极，对应电路板带正的位置。
Install the buzzer. The long feet are positive, corresponding to the positive position of the circuit board.
↓安装电源座，如图所示。
Install the power terminals as shown.
↓安装热敏电阻器(R17),安装光敏电阻器（R16），无正负极，如图所示安装。
Install the thermistor (R17), install the photoresistor (R16), no positive and negative poles, and install as shown.
↓检查元件是否安装错误。
Check whether the component is installed incorrectly.
↓检查焊点是否良好，是否有短路，是否漏焊。
Check whether the solder joints are good, whether there is a short circuit, and whether there is leakage.
↓安装数码管，第3位数码管要倒立安装。如图所示。
Install the digital tube, the third digital tube should be installed upside down. as the picture shows.
↓将数码管焊接好
Weld the digital tube
↓将集成电路的引脚校正
Straighten the pins of the IC.
↓将集成电路装入IC座，如图所示。
Install the IC into the IC holder as shown in the figure.
↓将电池装入。
Insert the battery.
↓通电，对电路复位，同时按住两个按键5秒以上，出现7.59后再松开。
Turn on the power and reset the circuit. Press and hold both buttons for more than 5 seconds at the same time, and then release them after 7.59.
↓将滤光膜的背胶撕开。
Tear off the adhesive of the filter film.
↓将滤光膜贴在数码管上。
Attach the filter film to the digital tube.
↓用剪刀将滤光膜的边剪整齐。
Use scissors to trim the edge of the filter film neatly.
↓将电路板装入外壳，并将光敏电阻和热敏电阻掰入外壳缺口位置。
Put the PCB into the case, and place the photoresistor and thermistor into the notch of the case.
↓用螺丝将外壳固定好
Fix the case with screws
↓安装好的时钟，再按照说明书的方法设置。
The installation is successful, and then set according to the instructions.
↓电路原理图
Circuit Schematic
