Installation Manual

Installthecrystaloscillator(thecrystaloscillatorshouldbeinstalledlyingdown);theninstall
two22Pceramiccapacitorsandthree104(0.1uF)ceramiccapacitors
便
Installthebuttonbatterybutton:Theopeningofthebatterybuttonfacesoutwardsforeasy
installationofthebattery.Theninstallthelight-emittingdiode,thepinofthelight-emitting
diodeismarked
thenegativepole
2
8
IC
1
28
IC
IC
Installtwo8-pinICsocketsandone28-pinICsocket:thedirectionoftheICsocketwiththe
notchisfacingthenotchonthecircuitboard
3
Install3sidepushswitches
5
S8550
),
Install5S8550transistors:theprintedsideofthetransistorfacestheinsideofthecircuit
board(thesemicirclefacestheedgeofthecircuitboard),andtheinstallationheightisthe
sameastheheightofthesideswitch
Installtheelectrolyticcapacitor:thelonglegoftheelectrolyticcapacitoristhepositivepole,
theshortlegisthenegativepole,andthenegativepolefacestheshadedpositiononthe
circuitboard,andtheninstallthepowersupplyplug.
1.5cm
Installthephotoresistor:thephotoresistorhasnopositiveandnegativepoles,leavethepin
ofthephotoresistorabout1.5cm,solderitonthecircuitboard,andthenbendthe
photoresistorsothatthelightportfacesupward
Installthethermistor:thethermistorhasnopositiveandnegativepoles.
两个
3
Installthenixietube:Beforeinstallingthenixietube,makesurethatallweldingisingood
condition,thereisnomissingorfalsewelding,andthereisnoshortcircuitbetweenthetwo
solderjoints,andtheninstallthenixietube,thethirdnixietubeshouldbeinstalledupside
down.
IC
电⽤
⼿
5v
3.
4.
5.
6.
7.
8.
9.
10.
11.