Campbell CR850 - Page 433

Section 11. Glossary
433
globalvariable
AvariableavailableforusethroughoutaCRBasicprogram.Thetermis
usuallyusedinconnectionwithsubroutines,differentiatingglobal
variables(thosedeclaredusingPublicorDim)fromlocalvariables,
whicharedeclaredintheSub()andFunction()instructions.
ground
Beingorrelatedtoanelectricalpotentialof0Volts.
halfduplex
Systemsallowbi‐directionalcommunications,butnotsimultaneously.
handshake,handshaking
Theexchangeofpredeterminedinformationbetweentwodevicesto
assureeachthatitisconnectedtotheother.Whennotusedasaclock
line,theCLK/HS(pin7)lineinthedataloggerCSI/Oportisprimarily
usedtodetectthepresenceorabsenceofperipherals.
HelloExchange
Theprocessofverifyinganodeasaneighbor.
Hertz
Abbreviated"Hz."Unitoffrequencydescribedascyclesorpulsesper
second.
HTML
HypertextMarkupLanguage.Aprogramminglanguageusedforthe
creationofwebpages.
HTTP
HypertextTransferProtocol.ATCP/IPapplicationprotocol.
IEEE4
Four‐byte,floating‐pointdatatype.IEEEStandard754.Sameformatas
Float.FloatisthenameusedwhendeclaringdatatypeforPublicorDim
declaredvariables.