ParentComponent

<aura:component >
	<!--ParentComp-->
    <aura:handler name="init" value="{! this}" action="{! c.doInit}" />
    <aura:attribute name="noOfTimesClicked" type="Integer"/>
    <aura:handler name="change" value="{! v.noOfTimesClicked}" action="{! c.handleChange}" />
    <lightning:button variant="base" label="UpdateClick" title="UpdateClick" onclick="{! c.handleClick }"/>
    <c:ChildComp1 noOfTimesClicked="{! v.noOfTimesClicked}"/>
    <c:ChildComp2 />
</aura:component>