Indicator: hin th kt quClick chut phi (Right click) ln front
panel (FP) ly khiNumeric Indicatorbng cch click chn khi nh hnh
sau:
control: nhp sClick chut phi (Right click) ln front panel (FP)
ly khiNumeric Controlbng cch click chn khi nh hnh sau:
LabVIEW (vit tt ca Laboratory Virtual Instrumentation
Engineering Workbench) l mi trng ngn ng haGi LabVIEW l ngn ng ha
hiu qu v v cch thc lp trnh,LabVIEW khc vi cc ngn ng C (hay Python,
Basic, vv.) im thay v s dng cc t vng(t kha) c nh th LabVIEW s dng
cckhi hnhnhsinh ng v cc dy ni to ra cclnhv cchm
ng thi, LabVIEW h tr cc k s, nh khoa hc v sinh vin, vv.xy dng
(thc thi) cc thut ton mt cch nhanh, gn, sng to, v d hiu nh cc khi
hnh nh c tnh gi nh v cch thc hot ng theo kiudng d liu (data flow)
ln lt t tri qua phi. Cc thut ton ny sau c p dng ln cc mch in v c cu
chp hnh thc nh vo vic ktni h thng tht vi LabVIEW thng qua nhiu chun
giao tip nh chungiao tip RS232 (giao tip qua cng COM), chun USB,
chun giao tipmng TCP/IP, UDP, chun GPIB, vv. V vy LabVIEW l mt ngn
nggiao tip a knh.LabVIEW h tr hu ht cc h iu hnh (Windows (2000,
XP,Vista, Windows7), Linux, MacOS, Window Mobile, Window
Embedded.Hin ti, LabVIEW 2010 l phin bn mi nht. Mt s phin bn c
caLabVIEW bao gm 2009, 8.6, 8.5, 7.1, 6i.Nhnchunghaiphinbnk nhau
2010 v 2009 khng cskhc nhau nhiu. Tuy nhin cs khc bit ng k gia cc
bn LabVIEW 7.1, LabVIEW 8.5 v LabVIEW 20091.2. Cc ng dng ca
LabVIEWLabVIEW c s dng trong cc lnh vc o lng, t ng ha, cin t,
robotics, vt l, ton hc, sinh hc, vt liu, t, vv. Nhn chung:LabVIEW c
th c s dng x l cc kiu d liu nh tn hiutng t (analog), tn hiu s
(digital) hnh nh (vision), m thanh(audio), vv.-LabVIEW h tr cc giao
thc giao tip khc nhau nh RS232,RS485, TCP / IP, PCI, PXI, v nh
vy
Vng lp whileVng lp while l vng lp c iu kin nh trong hnh 3.
nghaca vng lp while l cho php chy chng trnh mi ti khi no nt stopc
nhn th mi dng li. ly while loop ta voBD>
Express>Execution> While loop nh hnh 3:
While loop s lp li chng trnh ct trong vng lp ny, ti
khintStop(conditionalterminal)ntStoptiFPcnhn(Lu rng nt Stop c dng d
liu l Boolean-true hoc false).trong while loop cn c chn iteration
(i) c k hiu ( ) l b m s ln lp hin ti (ln thc hin u tin i=0).Vng lp
forCng nh while loop, for loop l vng lp m s ln lp li c th nh trc bi
ngi lp trnh. Ly for loop trong th vin hm nh sau:BD>Express>
Execution> For loop.
Trong for loop c chn iteration (i) c k hiu ( ) l b m s ln lp hin
ti (ln thc hin u tin i=0).ngoi ra trong for loop cn c chn Count (N)
c k hiu ( ) l m s ln php lp thc hin.
Cu trc Case:
Cu trc Case c hai hoc nhiu subdiagram(cc case) m ch c mt case
thc hin.iu ny ph thuc vo gi tr cc kiu d liu c ni vo cnh ngoi ca
terminal la chn hay cn gi l selector.Mng:Mng l mt cu trc d liu bao
gm nhiu phn t c cng kiu d liu,kiu d liu ca cc phn t mng c th l bt c
kiu g: s,logic,chui hay mng cluster.Phn t u tin ca mng c ch s l
0.To mng nh hnh trn:
C rt nhiu cc hm chc nng trong vic to mng cha trong Array nh
:build array,array size....Cc k hiu trong ton hc
Functions/Express/Arithmetic & Comparsion/Numeric
Khi biu din th : Controls/Grap Indicators
Cc bin : controls/Numeric
nh dng d liu cho cc bin: Nhp phi chut vo bin
numeric/Representation/chn kiu d liu
