Computers have become integral tools for data management and analysis in pharmaceutical research and development, particularly during pre-clinical drug testing. Three key computer systems used are CDS for chromatographic data, LIMS for non-chromatographic data management, and TIMS for textual document management. These systems help efficiently collect, store, analyze, report, audit, and archive the large amounts of data required for IND applications and regulatory filings, improving productivity. FDA regulations like 21 CFR Part 11 have impacted system design to ensure data integrity and security.