Delete comment from: Ken Shirriff's blog
Minor additions:
The main name of the chip is 134ΛБ2A. Before this, the type of package or level of reliability (military/space or conventional) was usually indicated. For example, in the first case there might not have been a symbol, in the second it was designated “К” or “КР” for plastic, and “КМ” for ceramic package.
Comparison with US technology part: most of the chips on the shuttle's board photo are dated 1988 and this once again confirms that reliability in space is more important than technology advancement in any country: TTL logic will receive less damage from cosmic particles and radiation and was more reliable at that time than advanced Intel or Motorola processors.
Jan 22, 2020, 2:55:07 PM