Lub LCD ntu code screen tsav li cas? Cia's qhia hauv qab no.
Thawj kauj ruam: Nws yog ib qho tsim nyog kom tau raws li ntau qhov tseem ceeb ntawm LCD ntu code LCD npo tsav tsheb: kev ua haujlwm voltage, lub voj voog lub luag haujlwm thiab kev tsis ncaj ncees. Peb qhov kev txwv no tseem ceeb heev thiab txhua yam yuav tsum tau ua.
Kauj ruam 2: Tsav txoj kev: Raws li txoj cai tsav tsheb ntawm LCD, koj tuaj yeem paub tias tsuas yog AC voltage tuaj yeem siv rau pixels ntawm LCD. Qhov sib piv ntawm LCD zaub yog qhov sib txawv ntawm tus nqi hluav taws xob ntawm COM tus pin thiab tus nqi hluav taws xob ntawm SEG tus pin. Thaum qhov sib txawv voltage no ntau dua li qhov saturation voltage ntawm LCD, lub pixel tuaj yeem tig rau, thiab thaum nws tsawg dua li LCD lossis tus nqi ntawm qhov voltage, lub pixel tuaj yeem muab tua. Lub LCD-hom MCU tau cia li tsim lub LCD tsav teeb liab los ntawm lub built-in LCD tsav Circuit Court. Yog li ntawd, tsuas yog qhov chaw nres nkoj I / O tuaj yeem simulate cov zis ntawm lub teeb liab tsav tsheb kom tiav kev tsav tsheb ntawm LCD.
Ntu code LCD npo feem ntau muaj ob hom pins: COM thiab SEG, uas zoo ib yam li cov raj digital, tab sis lub siab sib txawv yuav tsum tau hloov, piv txwv li: thawj lub sijhawm yog qhov zoo 3V, tom qab ntawd lub sijhawm thib ob yuav tsum yog Cov. rov 3v. Ua tib zoo mloog. Yog tias koj siv DC lub zog rau ntu LCD npo, lub vijtsam yuav raug muab pov tseg hauv lub sijhawm luv, yog li ceev faj.
