Daniel shares the fascinating history of computer keyboard technology, detailing the evolution of encoding techniques used to determine which keys are pressed. From the use of light beams in the 1960s to diode matrices and Hall effect switches in the 1970s, early keyboard designs were inventive and diverse. The shift to matrix scan encoding in 1970 revolutionized keyboard technology, allowing for improved debounce, centralized sensing logic, and unlimited rollover capabilities. Controversially, the implementation of microprocessor encoders in the late 1970s sparked a new era of keyboard design. The article sheds light on the complex and innovative world of keyboard construction, highlighting the key players and technologies that have shaped the keyboards we use today.
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