====== Computer Technik Keyboard-90 ======
The Keyboard-90 interface was designed by [[qlwiki:Jürgen Falkenberg]] and originally manufactured during the 1980s.


The Keyboard-90 plugged into the Sinclair QL via the socket for the 8049 co-processor and worked with either the original 8049 chip, or the [[qlwiki:Hermes]] replacement co-processor.


The interface allowed an XT or AT-style keyboard to be connected to the QL via a flying lead. 


The board also contained an 8039, four 74-series logic and five 4000-series logic ICs.


An external version of the interface was also produced, whereby it connected to the 8049 co-processor socket via a flat ribbon cable, with the interface then placed within a plastic case which would sit outside the QL.


Although these interfaces proved quite popular, the use of wire pins for the connection to the 8049 socket meant that the pins were easily bent or broken.



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{{  qlwiki:ql_keyboard90.jpg?direct&240x136|QL-Keyboard-90}}
{{  qlwiki:JFC-Keyboard-90-Interface.jpg?direct&240x136|QL-Keyboard-90 Close Up}} \\ 

Title: **QL-Keyboard-90**\\ 
Interface Type: AT / XT Keyboard Interface \\ 
Connection: 8049 Socket\\ 
Through-Connector: Yes - for the 8049 Co-Processor to be placed in the interface\\ 
Manufacturer: [[qlwiki:Jürgen Falkenberg]] \\ 
Year First Sold: Unknown\\ 
Original Price: Unknown\\ 
Reviews: Unknown\\ 
Download Manual: Unknown\\ 
Accompanying Software: None\\