The HP 3000 Series is a line of minicomputers developed by Hewlett-Packard (HP), introduced in 1972. Designed primarily for business applications, these systems were known for their reliability and ease of use. They ran on the MPE (Multi-Programming Executive) operating system, which allowed multiple users to access the system simultaneously. The HP 3000 Series was popular in the 1970s and 1980s, particularly among medium-sized businesses. Over the years, various models were released, offering improvements in processing power and storage capacity. The series was eventually discontinued in 2001, but it left a lasting impact on the computing landscape.