When a medical device manufacturer uses an Excel spreadsheet, it must comply with two different parts of the FDA regulations. Following 21 CFR §820.70(i) Automated Processes, the manufacturer must validate the spreadsheets used in production or the quality system, and revalidate them when changes are made. Following 21 CFR Part 11, the manufacturer may also have created an electronic record. Device manufacturers must understand these regulations and the means to ensure compliance.