). ▁ ▁One ▁stick ▁of ▁dynam ite . ▁ ▁Units ▁of ▁currency ▁A ▁unit ▁of ▁measurement ▁that ▁applies ▁to ▁money ▁is ▁called ▁a ▁unit ▁of ▁account ▁in ▁econom ics ▁and ▁unit ▁of ▁measure ▁in ▁account ing . ▁This ▁is ▁normally ▁a ▁currency ▁issued ▁by ▁a ▁country ▁or ▁a ▁fraction ▁there of ; ▁for ▁instance , ▁the ▁US ▁doll ar ▁and ▁US ▁cent ▁( ▁of ▁a ▁doll ar ), ▁or ▁the ▁euro ▁and ▁euro ▁cent . ▁ ▁ISO ▁ 4 2 1 7 ▁is ▁the ▁international ▁standard ▁describing ▁three ▁letter ▁codes ▁( also ▁known ▁as ▁the ▁currency ▁code ) ▁to ▁define ▁the ▁names ▁of ▁curr encies ▁established ▁by ▁the ▁International ▁Organ ization ▁for ▁Standard ization ▁( ISO ). ▁ ▁Historical ▁systems ▁of ▁measurement ▁ ▁Through out ▁history , ▁many ▁official ▁systems ▁of ▁measurement ▁have ▁been ▁used . ▁While ▁no ▁longer ▁in ▁official ▁use , ▁some ▁of ▁these ▁custom ary ▁systems ▁are ▁occasionally ▁used ▁in ▁day - to - day ▁life , ▁for ▁instance ▁in ▁cook ing . ▁ ▁Africa ▁▁ ▁Al ger ian ▁ ▁Egypt ian ▁ ▁Eth iop ian ▁ ▁E rit re an ▁ ▁Gu ine an ▁ ▁Lib yan ▁ ▁Mal ag asy ▁ ▁Maur it ian ▁ ▁Moz amb ican ▁ ▁Mor oc can ▁ ▁Se ych ello is ▁ ▁Som al ian ▁ ▁Tun is ian ▁ ▁South ▁African ▁ ▁T anz an ian ▁ ▁Asia ▁▁ ▁Arab ic ▁ ▁Af gan ▁ ▁Camb od ian ▁ ▁Chinese ▁ ▁Heb rew ▁( B ib lic al ▁and ▁Tal m