this is a python project, which draw chart using ascii char. README.MD readme file ./code python code. aa_control.py, aa_model.py, aa_view.py. use mvc module. u can run aa_control.py ./figure some latex file about this project, keyboard state machine and mvc. below is a example: +------------+ +------+ | | | | | box abcdef |<---+ | | | | | +-----+------+ | | | | | v | | +------------+ ++-----+ | box | | | b | v +-----+------+ +---+ | | | | | | | | | +--------->| | | | | | | | | | +---+