The Compucorp 325 Scientist could be called the best engineered calculator of its time. Introduced in the year 1972 the 300-line from Computer Design Corporation (CDC) were far ahead of their time. CDC, Los Angeles designed an universal data-processor with external ROM's for the operating system and mathematical functions and external RAM for data- and program-storage. This rare 325 Scientist is unique in the 300-line sporting a huge drum printer and a desktop style housing. An external tape recorder provides a storage capacity of about 75,000 Bytes. The 325 Scientist was replaced soon with the 327 Scientist with four times of internal memory. Quelle:http://datamath.org/Related/Compucorp/325.htm