SP-1 switch
 | This article provides insufficient context for those unfamiliar with the subject. |
The SP-1 (Stored Program 1) was the name of a computerized telephone exchange (a so-called switching office) manufactured by Northern Electric (now Nortel Networks beginning in 1972) in Canada. It was introduced around 1967.
In reality, this machine was nothing more than a previous generation crossbar switch except that a custom CPU was now operating the mini-bars instead of an electro-mechanical computer known as a marker. Experience with this product gave them the skills to design and build DMS.
 | This technology-related article is a stub. You can help Wikipedia by expanding it. |