▁the ▁consumer ▁and ▁education ▁mark ets . ▁It ▁is ▁program m able ▁via ▁Apple ▁II ▁and ▁there ▁is ▁a ▁user ▁made ▁program ▁for ▁the ▁Windows ▁ 9 x ▁operating ▁systems . ▁The ▁programming ▁language ▁allows ▁the ▁robot ▁to ▁perform ▁a ▁set ▁of ▁geometric ▁movements , ▁to ▁move ▁about ▁a ▁room ▁and ▁perform ▁tasks . ▁It ▁is ▁like ▁a ▁servant ▁robot , ▁although ▁it ▁does ▁not ▁truly ▁meet ▁the ▁requirements ▁of ▁a ▁robot , ▁as ▁it ▁had ▁no ▁sens ors ▁to ▁use ▁to ▁receive ▁input ▁and ▁then ▁make ▁dec isions ▁accordingly . ▁ ▁The ▁rob ots ▁were ▁sold ▁commer cially ▁starting ▁in ▁early ▁ 1 9 8 3 , ▁and ▁were ▁intended ▁to ▁be ▁in exp ensive , ▁lack ing ▁a ▁complicated ▁manip ulating ▁device . ▁Units ▁are ▁be ige ▁m old ed ▁pl astic ▁with ▁two ▁drive ▁whe els ▁as ▁feet ▁and ▁stand ▁about ▁ 3 6 ▁inches ▁tall . ▁Ar ms ▁on ▁Top o ▁ 1 ▁and ▁ 2 ▁fol d ▁out , ▁but ▁Top o ▁ 3 ▁la cks ▁arms ▁altogether . ▁ ▁Operation ▁is ▁based ▁on ▁one ▁of ▁two ▁programming ▁languages , ▁either ▁Apple ▁B AS IC , ▁a ▁modified ▁version ▁of ▁the ▁Log o ▁language , ▁or ▁a ▁version ▁of ▁For th . ▁ ▁Communic ation ▁is ▁via ▁a ▁radio ▁or ▁inf ra red ▁transmit ter ▁attached ▁to ▁a ▁personal ▁computer . ▁Top o ▁ 2 ▁and ▁ 3 ▁use ▁an ▁inf ra red ▁transmit ter , ▁and ▁can ▁be ▁controlled ▁by ▁a ▁four ▁way ▁pad ▁on ▁the ▁top