A circuit board from the French company SAGEM. In the 1980s and 1990s, SAGEM was a significant player in the aerospace and military sectors in Europe, with its products widely used in fighter jets, missiles, flight control computers, and navigation systems.01SAGEM military-grade industrial/military electronic circuit board
One can see the clear SAGEM logo (SAGEM, a company that was very active in aerospace, communications, and military fields) 
02Modular military electronic design
Chip models include “21301942 – 02B” and “21301975 – 00”, which may perform different signal processing and control functions.03Models “190A325 – 145” and “LM1M8CRH – Q40X”
This is an electronic component produced by Lockheed Martin, which, based on its markings, belongs to high-reliability devices in the military or aerospace field, a globally recognized aerospace and defense industrial enterprise.
04Military / High-end industrial electronic circuit board
Model “XC3064TM” represents its scale (approximately 60,000 gates), “70M” is the speed grade, and “PG132BKI9625” is the production batch code.
The golden packaged chips like “XKM28C020MHR – 20” are military-grade memory (EEPROM), compliant with “MIL-SPEC” standards (U.S. military standards), high-temperature resistant, radiation-resistant, suitable for extreme environments.05Military / High-end industrial electronic circuit board
Brand “LSI” (large-scale integrated circuit company, later acquired), focuses on military / industrial-grade processors and control chips, with specific models “L1A8043” and “L1A7004” used for complex logic operations and system control, suitable for extreme environments (high temperature, strong electromagnetic interference).
A row of golden chips like “HII – 2796” are military-grade memory (SRAM/ROM), compliant with “MIL-SPEC” standards (U.S. military standards), ensuring stable data storage, radiation-resistant, and shock-resistant.
06Military / High-end industrial electronic circuit board
The purple chips like “03535 – 77A10283SP1” are military-grade memory (SRAM/ROM), compliant with “MIL-SPEC” standards (U.S. military standards), ensuring stable data storage, radiation-resistant, and shock-resistant.
On the circuit board, numerous black DIP packaged chips (such as “77A560”) are logic control and signal processing chips, working in conjunction with LSI to achieve complex functions.
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