The invention belongs to the technical field of Chinese information processing, and is a China calligraphy practice device which combines microelectronics technology with Chinese character writing practice. It includes hardware configuration and control programs, such as central processing unit, keyboard, writing input board, writing pen, copybook library, copybook display and so on. By operating the keyboard, the selected Chinese character input code is converted into a standard deformed national standard code in the machine, and the corresponding font code is taken out from the copybook library, and then the copybook characters are displayed, and the handwritten characters are input by the CPU.
Hardware includes central processing unit, copybook and display for handwritten Chinese characters, display control port, ROM with built-in control program, writing input board capable of handwritten Chinese characters, writing control port, data memory, keyboard, copybook library and control program for operating equipment.
Characterized in that (a) the pen used for writing input can be a hard pen or an elastic pen with an elastic nib; B. The control program of the running device shall be carried out according to the following steps:
(1) start;
(2) preparation: including initialization and normal state prompt display,
(3) keyboard input: if the key is pressed, it will enter the key processing; if no key is pressed, it will continue to detect whether there is writing input in the writing control port.
(4) key processing: according to the codes of the keys, the function keys and the word selection keys are pressed and stored in the function state cache area and the word selection cache area of the digital memory for later use;
(5) determine that address of the selected word and convert the key code of the selected word into the address of the selected word;
(6) taking out the selected font code from the copybook library and sending it to the display buffer of the digital memory;
(7) sending the selected words to the display control port and displaying them on the display for reading and analyzing the strokes of the words;
(8) When there is input on the writing input board, enter the preprocessing program;
(9) The preprocessing program properly processes the handwritten input signal, including stroke segmentation, smoothing, denoising, spatial sampling and normalization;
(10) Send the processed write pattern code to the write buffer of the data memory 7 for later use;
(1 1) Check the function status buffer of the data memory to judge whether it is in the copy state, if not, directly display the shape code, if yes, judge the copy state;
(12) is in the copying state, and related processing continues; If it is not in the copying state, it must be in the writing state;
(13) Because the copying function needs to display copybooks and handwritten input together, the central processor combines the two shapes and codes here;
(14) Send the composite code to the display buffer of the data memory for display;
(15) comparison shows that the deviation between handwritten input words and copybook words can be visually seen on the display screen at any time;
(16) Judge whether the copying is completed, if so, execute the comprehensive scoring subroutine, if not, continue to write the input, and send the written shape code to the display buffer of the data memory;
(17) is in a temporary writing state, and it is judged whether the temporary writing is finished. If it is finished, the comparison display subroutine is executed; If not, continue to write input from the book and write control port;
(18) Clear the function status buffer, and clear the contents of the function status buffer for the next input record after completing a copybook display or comparing writing with copybook display.