. ▁ ▁The ▁adapter ▁allows ▁one ▁computer ▁system ▁to ▁be ▁treated ▁as ▁an ▁input / output ▁device ▁by ▁another . ▁ ▁It ▁is ▁used ▁" to ▁link ▁the ▁processing ▁units ▁in ▁a ▁lo os ely ▁couple d ▁multip ro cess ing ▁system . ▁ ▁Virtual ▁channel - to - channel ▁ad ap ters ▁( V CT CA ) ▁are ▁often ▁used ▁to ▁communicate ▁between ▁two ▁virtual ▁machines ▁in ▁the ▁z / VM ▁operating ▁system . ▁The ▁Virtual ▁Machine ▁Communic ation ▁Fac ility ▁( VM CF ), ▁and ▁later ▁Inter ▁User ▁Communic ation ▁Ve h icle ▁( I U CV ) ▁are ▁now ▁often ▁used ▁in ▁place ▁of ▁V CT C As ▁because ▁they ▁provide ▁a ▁simpler ▁interface ▁and ▁improved ▁performance . ▁ ▁References ▁ ▁Category : IB M ▁main frame ▁technology <0x0A> </s> ▁David ▁John ▁Bal com be ▁( born ▁ 2 4 ▁December ▁ 1 9 8 4 ) ▁is ▁a ▁former ▁English ▁professional ▁cr ick eter . ▁Bal com be ▁is ▁a ▁right - hand ed ▁b ats man ▁who ▁bow ls ▁right - arm ▁medium - fast . ▁He ▁was ▁born ▁in ▁the ▁City ▁of ▁London ▁and ▁attended ▁St . ▁Joh ns ▁School ▁in ▁Le ather head . ▁ ▁Cr icket ▁career ▁Bal com be ▁spent ▁his ▁early ▁first - class ▁career ▁with ▁Dur ham ▁U CCE , ▁where ▁he ▁played ▁several ▁matches ▁against ▁County ▁Championship ▁teams , ▁his ▁first ▁coming ▁against ▁Som erset ▁in ▁April ▁ 2 0 0 5 . ▁Despite ▁being ▁an ▁expensive ▁bow ler ▁in ▁his