The interfacing is courtesy of a Teensy microcontroller board as in so many other keyboard projects, but what makes this extra-interesting is the way the Coleco keyboard speaks to the world.

A previous Design Idea described a single-wire-plus-ground-return, keypad-to-microcontroller interface in which a single pulse represents each keystroke (Reference 1). The pulse's width is ...

The SInclair ZX 8-bit computers of the early 1980s were masterpieces of economy, getting the most out of minimal hardware. The cassette tape interface was a one-bit port, the video was (on the ...

You can use a microcontroller that includes an ADC to design a two-wire-plus-ground keyboard interface. For example, you can use a resistive voltage divider to identify a pressed key (Reference 1). A ...

He calls it the first 32-bit microcontroller with a Rambus interface. "NEC sees the development of this Rambus-equipped microcontroller as fundamental to furthering the progress of the multimedia age, ...

It's this flexibility that IBM is looking to take advantage of with the company recently filing a U.S. patent application for a morphing touchscreen keyboard interface that would automatically ...