Memory Card [IBM]

Maker and role
IBM, Maker
Production date
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Object detail

Accession number
Computer memory card, IBM Monolithic System Technology (MST). Rectangular black and copper card with multiple solder points in a grid layout. Contains 39 square, silver coloured components and four black plastic pin sockets along one edge.
Brief History
Monolithic System Technology (MST) was introduced by IBM in 1968, first appearing in the System/370 and replacing Solid Logic Technology (SLT).
With the improvement of integrated circuits more and more circuit functions were able to be housed in each module, thus reducing the number of cards required in a computer. MST replaced discrete transistors and diodes with monolithic integrated circuits. The interconnecting circuits of the boards that these cards plug into were now very fine printer circuits. The multiplication of two 10 digit numbers could now be done over 1,000,000 times per second.
8235408A4274YM23 Serial Number
Credit Line
IBM. 1970s. Memory Card [IBM], 2014.48. The Museum of Transport and Technology (MOTAT).


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