Real-time data acquisition and data plot problem in Matlab

Question

I' ve been having problems to acquire data and plot it in real time. I' ve been able to plot a graph that has a moving x-axis with the help of function drawnow nd by translating the x-axis with the help of function xlim. Now I' ve been wondering if there is a way to read acquisited data one by one (bite per bite), and to plot it in real - time using the same method. Also I' m wondering if the same method could be aplied to generate a signal and send it to an analog output(example winsound), but to make it go outside bit by bite. The folowing is Matlab code used for gui.

function pushbutton3_Callback(hObject, eventdata, handles)
handles.StopGenSignal = 0;
guidata(hObject,handles);
amp=str2double(get(handles.edit7,'String'));
frek=str2double(get(handles.edit6,'String'));
% ao=analogoutput('winsound');
% addchannel(ao,1);
% set(ao,'StandardSampleRates',8000);
% set(ao,'TriggerType','Immediate');
% set(ao,'SampleRate',2*8000);
h=animatedline;
xlabel('Vrijeme [sec]');
ylabel('Amplituda [V]');
title('Generisani signal');
axis([0 3 -amp-1 amp+1]);
grid on;
t=0;
while handles.StopGenSignal==0
    y=amp*sin(2*pi*frek*t);
%putdata(ao,y);

if(t>3)
  axis([t-2.9 t+0.1 -amp-1 amp+1]);
end
addpoints(h,t,y);
drawnow
pause(0.01);
t=t+0.01;
handles = guidata(hObject);
end
function pushbutton5_Callback(hObject, eventdata, handles)
handles.StopGenSignal = 1;
guidata(hObject,handles);

The given code represents the generated signal, my question is whether there is a way to make an analogoutput object (or analog input) and to send data (or recieve) data bite per bite (with a refresh period) so that I can use the same metod as in the shown while loop to plot date in real time, and to send it to winsound (or mcc). Thanks in advance.