On the Design of a Smart Manuscript Drawing Board
Wang Rong-hu · Journal of Jilin Teachers Institute of Engineering and Technology · 2015
The study describes a manuscript drawing input device designed with and made of ordinary PCB copper-clad Plate. The device is able to display the contacts on both left and right of the Y coordinate,in the 4 quadrants and within the coordinate system when a pen touches the surface of copper foil. In the design,the micro voltage of the copper-clad plate is measured through voltage amplification of non-balance electrical bridge. At the same time,the signals are to be amplified and analogue signals will be transformed into digital ones. The final coordinate figure is then calculated via a certain program and output to the LCD.