An 8 bit upcounter's current value is 10101100 (Least significant bit is at right hand side). After a while it's contents are changed to 00100111. Calculate the clock pulses required for this change code example

Example: how to find the left most bit 1 in binary of any number

//C++ Code to find the value of 2^n = highestOneBit(). 
int highestOneBit(int i) {
    i |= (i >>  1);
    i |= (i >>  2);
    i |= (i >>  4);
    i |= (i >>  8);
    i |= (i >> 16);
    return i - (i >> 1);
}