The CR9000 was a modular, multiprocessor system that provided precision measurement capabilities in a rugged battery-operated package. Its Base System included a CR9031 CPU module, CR9041 A/D module, CR9011 power supply module, 2 Mbytes SRAM memory, 2 Mbytes Flash Memory, power supply module, and PC9000 Support Software for Windows. The on-board, BASIC-like programming language included data processing and analysis algorithms. Up to nine I/O modules (purchased separately) could be inserted into a CR9000 to configure a system for specific applications.