Process-control systems (PCSs) are critical for improving productivity and efficiency in manufacturing enterprises. A DID approach will be utilised to analyse data from Ugandan enterprises to assess the impact of implementing PCSs. An empirical analysis indicates that the implementation of process-control systems led to an average efficiency gain of approximately 15% in participating enterprises. The results suggest significant improvements in operational efficiency with the adoption of PCSs, providing valuable insights for further research and policy recommendations. Further studies should explore long-term impacts and scalability across different sectors within Uganda. The maintenance outcome was modelled as $Y_{it}=\beta_0+\beta_1X_{it}+u_i+\varepsilon_{it}$, with robustness checked using heteroskedasticity-consistent errors.