Difference between revisions of "Over the back"
From Computer History Wiki
m (fix link) |
m (have MM8-E Memory System page now) |
||
| (One intermediate revision by the same user not shown) | |||
| Line 1: | Line 1: | ||
| − | '''Over the back''' or '''over the top''' are terms used to describe an alternative connectivity [[data path|path]] between two more more boards plugged into a [[backplane]]; i.e. not using the [[bus]] carried by the backplane. | + | '''Over the back''' or '''over the top''' are terms used to describe an alternative connectivity [[data path|path]] between two more more [[printed circuit board|boards]] plugged into a [[backplane]]; i.e. not using the [[bus]] carried by the backplane. |
| − | On the board edge opposite to the 'fingers' which plug into the backplane, a [[flat cable]], or in some cases a small [[printed circuit board]] | + | On the board edge opposite to the 'fingers' which plug into the backplane, a [[flat cable]], or in some cases a small [[printed circuit board]] with a pair of connectors, plugs into [[Berg connector]] headers each board. |
| − | In a few cases (e.g. [[ | + | In a few cases (e.g. [[MM8-E Memory System]] [[main memory]]), instead of headers, the back edge of the boards ''also'' has contact fingers, and what is effectively a small plug-on backplane is used to connect the cards. |
{{semi-stub}} | {{semi-stub}} | ||
[[Category: Components]] | [[Category: Components]] | ||
Latest revision as of 22:15, 7 November 2021
Over the back or over the top are terms used to describe an alternative connectivity path between two more more boards plugged into a backplane; i.e. not using the bus carried by the backplane.
On the board edge opposite to the 'fingers' which plug into the backplane, a flat cable, or in some cases a small printed circuit board with a pair of connectors, plugs into Berg connector headers each board.
In a few cases (e.g. MM8-E Memory System main memory), instead of headers, the back edge of the boards also has contact fingers, and what is effectively a small plug-on backplane is used to connect the cards.
