利用MATLAB绘图功能画出电话拨号板，并写出相应的程序，实现号码记忆和复读功能。-MATLAB graphics functions to draw the telephone dial-up board, and write the corresponding program number memory and repeat function.

电话卡类，拨号，查看余额，接通电话等功能-Calling card type, dial-up, check balances, access to phone functions