Dab tsi yog ntu LCD npo
Segment code LCD lossis ntu code LCD npo tsuas yog ib txoj hauv kev rau cov neeg siv ntawm cov ntxaij vab tshaus LCD hu rau qee hom LCD npo, tab sis hauv kev lag luam LCD, nws feem ntau hu ua qauv LCD npo kom paub qhov txawv ntawm qhov taw tes. Array LCD npo, yog li ntu LCD npo tsis yog ib qho kev qhia nruj heev lossis kev faib tawm.
Lub npe ntawm ntu cov kua siv lead ua kua siv lead ua los ntawm cov ntawv thov thaum ntxov ntawm lub vijtsam LCD, uas yog siv los hloov LED cov raj (nws yog tsim los ntawm 7 tus cwj mem, siv los tso saib cov lej 0-9), xws li kev suav Yeej, cov ntsiab lus tso tawm ntawm cov khoom siv, moos thiab watches, thiab lwm yam yog cov lej thiab kuj yooj yim. Niaj hnub no, cov ntxaij vab tshaus LCD uas tsis yog-dot-matrix feem ntau yog hu ua ntu LCD cov ntxaij vab tshaus.
Lub realization txoj cai ntawm ntu code LCD npo
Txhua ntu hauv ntu ntu code npo tau ntim nrog cov kua siv lead ua tshwj xeeb. Nyob rau hauv qhov kev txiav txim ntawm lub teb hluav taws xob, cov kev taw qhia ntawm cov siv lead ua yuav twisted, yog li hloov nws lub teeb transmittance, thiaj li hais tias cov ntsiab lus tso tawm yuav pom. Daim duab schematic ntawm cov txheej txheem no yog qhia hauv daim duab 3.
Txhawm rau ua kom cov siv lead ua twist, qhov sib txawv ntawm qhov hluav taws xob ntawm cov electrodes yuav tsum muaj ntau dua li qhov pib ua ntej cov ntsiab lus tuaj yeem tso tawm. Feem ntau LCD ntu code npo muaj peb qhov tsis muaj: ua haujlwm voltage, Lub luag haujlwm (suav nrog tus lej ntawm COM) thiab BIAS (kev tsis ncaj ncees voltage, sib haum rau qhov pib), piv txwv li, 3.3V, 1/4 Lub Luag Haujlwm, 1/3 BIAS txhais tau tias Kev khiav hauj lwm voltage ntawm LCD yog 3.3V, Muaj 4 COMs, thiab qhov pib yog hais txog 1.1V (3.3 / 3=1.1). Hauv kev siv tiag tiag, txhawm rau txhawm rau ua kom muaj txiaj ntsig zoo, qhov sib txawv ntawm qhov hluav taws xob siv rau ob qhov kawg ntawm cov electrode feem ntau yog ze rau qhov ua haujlwm voltage ntawm LCD; Yog tias nws tsis tshwm sim, qhov sib txawv ntawm qhov hluav taws xob siv rau ob qhov kawg ntawm cov electrode feem ntau yog ze rau oV. Nws yog ib qho tseem ceeb kom nco ntsoov tias cov kua molecules yuav tsum tau tsav los ntawm AC teeb liab. Tsis txhob siv DC voltage rau ob qhov kawg ntawm cov electrodes ntev. Txwv tsis pub, cov yam ntxwv ntawm electrochemical ntawm cov kua siv lead ua kua molecules yuav raug cuam tshuam thiab cov nyhuv ntawm cov zaub yuav plam. Qhov tshwm sim ntawm qhov txo lub neej ncua yog irreversible.
Tom qab nkag siab cov ntsiab lus saum toj no, thaum peb xav teeb ib ntu, peb tsuas yog yuav tsum xyuas kom meej tias qhov sib txawv ntawm ob qhov kawg ntawm cov electrode yog 3.3V (piv txwv li, COM1=3.3V, SEG1=0V), thiab lub caij nyoog yog tsim nyog. Qhov hluav taws xob thim rov qab tso tawm ntawm ob tug ncej<(xws li="" com1="0V," seg1="3.3V);" thaum="" ib="" ntu="" tsis="" teeb,="" tsuas="" yog="" yuav="" tsum="" xyuas="" kom="" meej="" tias="" qhov="" sib="" txawv="" ntawm="" qhov="" hluav="" taws="" xob="" siv="" rau="" ob="" qhov="" kawg="" ntawm="" lub="" electrode="" yog="" ov="" (xws="" li="" com1="3.3V," seg1="3.3V)," thiab="" ntawm="" lub="" sijhawm="" tsim="" nyog,="" qhov="" voltage="" ntawm="" cov="" ob="" tug="" ncej="" yog="" inverted="" thiab="" tso="" zis="" (piv="" txwv="" li,="" com1="ov," seg1="">
Txhawm rau ua tiav qhov kev ua haujlwm zoo li no, MCU nrog ceev nrawm, lub sijhawm raug thiab siv hluav taws xob tsawg yog xav tau. Tus sau ib zaug siv Silicon Labs' EFM8SB10F8 microcontroller kom ua tiav kev ua haujlwm ntawm lub roj teeb qhia ntu ntu screen. EFM8SB10F8 tuaj yeem ncav cuag 25MHz lub ntsiab zaus, uas muaj peev xwm ua haujlwm nrawm nrawm I0; 16-ntsis Timer tuaj yeem tswj xyuas lub sijhawm tsim nyog, kom lub vijtsam ntu ua tiav cov txiaj ntsig zoo; MCU muaj ib tug built-in 24MHz high-precision oscillator, qhov tseeb muaj peev xwm ncav cuag ± 2%, uas muab ib tug meej siv rau lub sij hawm, thiab nyob rau tib lub sij hawm, nws muaj peev xwm cawm lub sab nraud siv lead ua oscillator thiab txo tus nqi ntawm cov khoom. ; nws tuaj yeem ncav cuag qis li 0.6uA thaum pw tsaug zog, uas ua rau lub sijhawm standby ntawm cov khoom zoo heev.
Ntawm cov khoom siv kho vajtse, cov qauv tsim hluav taws xob tau dhau los ua qhov yooj yim rau nruab, saib daim duab 4 kom paub meej; nyob rau hauv lub software, cov tub ntxhais code rau tsav lub segment code screen tsis nyuaj, saib daim duab 5 kom paub meej. Thaum siv, koj tsuas yog yuav tsum tau hu rau API kev ua haujlwm ntawm tus tsav tsheb code hauv Timer cuam tshuam kev ua haujlwm kom pom cov ntu ntu code screen. Yog tias cov xim ntawm cov duab pom yog lub teeb, lub sij hawm luv luv thaum lub sij hawm Timer cuam tshuam tuaj yeem txuas ntxiv kom ua tiav cov txiaj ntsig zoo dua.
Segment code LCD npo daim ntawv thov
Cov cuab yeej thiab cov ntsuas: roj ntsuas, ntsuas dej, lub tsheb npav, lub tsheb suav suav, cov khoom siv hauv chaw ua haujlwm: fax tshuab, xuas nrig ntaus tshuab, tshawb xyuas tshuab, kev tswj xyuas, khoom siv sib txuas lus: ntau yam IC daim npav xov tooj, xov tooj hauv Internet, IP xov tooj
Banking system: POS tshuab
Tax system: tax control machine
Cov cuab yeej kho mob: lub cev saib xyuas lub cev thiab ntau yam khoom siv kho mob
Cov cuab yeej tswj kev lag luam: tsis siv neeg tswj
Ntau yam txiv neej-tshuab interfaces, handheld pab kiag li lawm, thiab lwm yam.
Qhov zoo thiab qhov tsis zoo ntawm ntu code LCD npo
Qhov zoo ntawm ntu ntu code LCD npo: qhov xav tau qis rau lub ntsiab tswj nti, software yooj yim, tus nqi qis ntawm kev tswj lub vijtsam LCD thiab lub ntsiab tswj.
Qhov tsis zoo ntawm ntu code LCD npo: cov ntawv nyeem tsis tuaj yeem hloov pauv
