Fig. 7.

Fraction of outputs which should be FALSE but are read as TRUE (false positive) and fraction of outputs which should be TRUE but are read as FALSE (false negative) as a function of the number of oscillations before each measurement. The first computation performed with each gate has a 100% success rate. The number of false positives increases over time as chemical aging reduces the phase shift in an output droplet from the spike of an input drop. False negatives can occur due to variation in the period of oscillation but there is no trend. After each gate has been used to perform four computations, the inputs no longer oscillate due to chemical aging.