Establishments primarily engaged in providing computer processing and data preparation services. The service may consist of complete processing and preparation of reports from data supplied by the customer or a specialized service, such as data entry or making data processing equipment available on an hourly or time-sharing basis.

• Calculating service, computer
• Computer time-sharing
• Data entry service
• Data processing services
• Data verification service
• Key punch service
• Leasing of computer time
• Optical scanning data service
• Rental of computer time
• Service bureaus, computer
• Tabulating service, computer