Mode: Visitor // Expert

Language:

Circuits/arithmetic units

• introduciton
• circuits
• precognitions
  • IC
  • transistor
  • flip-chip
  • hybridtechnology
  • reflow-solderring
  • SMD
• history of IBM
• circuits in SLT
  • structure
  • features
• memory in MST
  • central memory
  • logic- and memory elements
• And after that?
  • today
  • future
• tape recorder
  • IBM 2310
  • IBM 1316
• arithmetic units
  • arithmetic units
  • relay
• take a test
• Credits
• Sources

memory in MST

The Monolithic System Technology (MST) is a microelectronic circuit family. This technology was used in the exhibit „main memory card of IBM System/370 (1971) and is a replacement technology of SLT.

The smallest circuit building block is an integrated circuit chip, which includes up to five circuits. The encapsuled 0.5-inch square module includes one to four circuit chips. Transistors are mounted external of the MST module on the MST card. A maximum of 60 MST modules can be attached on a MST card along with seperate capacitors and resistors.

The transoition times are 2 – 5 ns, 30 ns and 100 ns for 1,25 volt and 0 volt to -3 volt.

The technology is designed to provide a balanced reflection of cost and performance requirements.