In measuring the effect of computerization on productivity, the degree of computerization is generally difficult to measure, so indirect explanations through cost/benefit analysis methods are typically used as substitutes. This is because computerization manifests in the form of efficiency improvements that are difficult to measure quantitatively, and indicators for measuring the degree of computerization have not yet been developed. This study aims to quantitatively analyze the impact of computerization on productivity by deriving a variable measurement method that can quantitatively represent the degree of computerization using the Cobb-Douglas production function, which is widely used in economics and is convenient to manipulate.