1. Sib tsoo cov nti, siv cov ntawv xuab zeb zoo los zom tawm cov qauv tshwj xeeb ntawm cov nti. Nws yog qhov muaj txiaj ntsig zoo dua rau cov chips tsis nrov. Rau cov chips nquag, koj tsuas yog yuav tsum twv seb qhov kev ua haujlwm dav dav, tshawb xyuas cov av ntawm tus pin thiab txuas cov khoom siv hluav taws xob, thiab nws yooj yim los sib piv cov nti tiag.
2. Sealing kua nplaum, tom qab solidification, lub pob zeb zoo li cov kua nplaum (xws li cov hlau nplaum, ceramics) yuav npog tag nrho cov khoom ntawm PCB. Nyob rau tib lub sijhawm, cov xov hlau sab hauv raug cuam tshuam thiab sib tw ua ke nrog cov xov hlau nyias nyias, yog li cov xov hlau ya tau yooj yim tawg thaum lub sij hawm tshem tawm cov kua nplaum, thiab tsis paub txog kev sib txuas. Cov teeb meem xav tau kev saib xyuas Cov kua nplaum yuav tsum tsis txhob corrosive, thiab qhov kub thiab txias ntawm qhov chaw kaw f tsis loj.
3. Porting ib feem ntawm qhov kev pab cuam nyob rau hauv CPU los yog software mus rau lub encryption nti, thiaj li hais tias qhov kev pab cuam tsis tiav, thiab tsuas yog khiav ib txwm nrog kev koom tes ntawm lub encryption nti. Muab DES, 3DES encryption thiab decryption functions.
4. Npuag nti, tuaj yeem' tsis pom tus qauv specification thiab tsis txhob' tsis paub qhov thaiv. Nyob rau tib lub sijhawm, kev ua haujlwm ntawm lub nti tsis yooj yim los twv. Muab lwm yam rau hauv cov yas, xws li cov ICs me me, cov resistors, thiab lwm yam.
5. Txuas qhov tsis kam ntawm 60 ohms los yog ntau tshaj nyob rau hauv series ntawm cov teeb liab kab uas tsis tshua muaj tam sim no (kom lub on-off iav ntawm lub multimeter tsis suab), yog li ntawd nws yuav ua rau kom muaj teeb meem ntau thaum ntsuas qhov kev sib raug zoo nrog cov multimeter.
5. Txuas lub resistor siab tshaj 60 ohms nyob rau hauv series ntawm lub hwj chim kab nrog ib tug me me ntawm tam sim no (kom lub digital multimeter nyob rau hauv thiab tawm), uas yuav ua rau kom lub inconveniences thaum siv cov digital multimeter los kuaj kev sib txuas.
6. Siv qee cov khoom me me nrog cov lej tsis zoo los koom nrog hauv kev ua cov teeb liab, xws li cov nti me me capacitors, TO-XX diodes, peb mus rau rau-tus pin me chips, thiab lwm yam, uas ua rau muaj kev nyuaj siab nrhiav qhov tseeb ntawm cov khoom siv.
7. Qhov chaw nyob lossis cov ntaub ntawv kab yog hla (tshwj tsis yog RAM, software yuav tsum tau hla kev sib raug zoo), uas ua rau nws tsis yooj yim sua kom kos inferences txog kev sib raug zoo ntawm sab kev sib raug zoo thiab ua rau muaj kev nyuaj ntawm kev ua haujlwm.
8. PCB xaiv faus ntawm thiab qhov muag tsis pom kev ntawm kev siv tshuab, kom cov viav vias tau muab zais rau hauv lub rooj tsavxwm. Txoj kev no muaj tus nqi siab dua thiab tsim nyog rau cov khoom siv high-end.
9. Daim ntawv thov ntawm lwm cov khoom txhawb tshwj xeeb, xws li customized LCD npo, customized transformer, SIM card, encrypted hard disk, thiab lwm yam.
