TRONIX FUNDA

                                AM generation code for MATLAB! %AM generation t=0:0.001:1; m=input('Enter modulation Index'); ms=5*sin(2*pi*5*t); %Message signal cs=5*sin(2*pi*50*t); %Carrier signal Am=(5+m*ms).*sin(2*pi*100*t);%AM signal subplot(3,1,1); plot(t,ms); xlabel('Time'); ylabel('Amplitude'); title('Message signal'); subplot(3,1,2); plot(t,cs); xlabel('Time'); ylabel('Amplitude'); title('Carrier signal'); subplot(3,1,3); plot(t,Am); xlabel('Time'); ylabel('Amplitude'); title('AM signal'); Output: Enter modulation Index 1

FM generation code for MATLAB! %FM generation t=0:0.001:1; m=input('Enter modulation Index'); ms=5*sin(2*pi*5*t); %Message signal cs=5*sin(2*pi*100*t); %Carrier signal Fm=10*sin(2*pi*50*t+(m.*sin(2*pi*5*t)));%FM signal subplot(3,1,1); plot(t,ms); xlabel('Time'); ylabel('Amplitude'); title('Message signal'); subplot(3,1,2); plot(t,cs); xlabel('Time'); ylabel('Amplitude'); title('Carrier signal'); subplot(3,1,3); plot(t,Fm); xlabel('Time'); ylabel('Amplitude'); title('FM signal'); Output: Enter modulation Index 5

Code for generation of ASK using MATLAB! x=input('input binary message sequence'); N=length(x); t=0.001:0.001:N; for i=1:1:N;    m((i-1)*1000+1:i*1000)=x(i); end c1=2*sin(2*pi*5*t);  y=m.*c1;  subplot(3,1,1);  plot(t,m);  xlabel('Time');  ylabel('Amplitude');  Title('Bit sequence');  subplot(3,1,2);  plot(t,c1);  xlabel('Time');  ylabel('Amplitude');  Title('Carrier');  subplot(3,1,3);  plot(t,y);  xlabel('Time');  ylabel('Amplitude');  Title('ASK signal'); Output:[1 1 0 1 0 1 1 0 ]         

Code for generating PSK signal using MATLAB!!! x=input('input binary message sequence'); N=length(x); x(x==0)=-1; t=0.001:0.001:N; for i=1:1:N;    m((i-1)*1000+1:i*1000)=x(i); end c1=2*sin(2*pi*5*t);  y=m.*c1;  subplot(3,1,1);  plot(t,m);  xlabel('Time');  ylabel('Amplitude');  Title('Bit sequence');  subplot(3,1,2);  plot(t,c1);  xlabel('Time');  ylabel('Amplitude');  Title('Carrier');  subplot(3,1,3);  plot(t,y);  xlabel('Time');  ylabel('Amplitude');  Title('PSK signal'); Output:Input sequence [1 1 0 1 0 1 1 0]          

Code for generating FSK signal using MATLAB! x=input('input binary message sequence'); N=length(x); t=0.001:0.001:N; for i=1:1:N;    m((i-1)*1000+1:i*1000)=x(i); end f1=10; f2=5; c1=2*sin(2*pi*f1*t);  y1=m.*c1;  for j=1:N      if x(j)==1          x(j)=0;      else          x(j)=1;      end      m1((j-1)*1000+1:j*1000)=x(j);  end  c2=2*sin(2*pi*f2*t);  y2=m1.*c2;  y=y1+y2;  subplot(3,1,1);  plot(t,m);  xlabel('Time');  ylabel('Amplitude');  Title('Bit sequence');  subplot(3,1,2);  plot(t,c1);  xlabel('Time');  ylabel('Amplitude');  Title('Carrier');  subplot(3,1,3);  plot(t,y);  xlabel('Time');  ylabel('Amplitude');  Title('Fsk signal'); Output:  Input sequence [1 0 0 1 1 1 0]        

The Microprocessor 8085 programs are available on the following sites with good explanation. These programs will help you for cracking different competitions related to microprocessor..  1.8 085 projects.info/page/free- programs -for- 8085 -microprocessor.html 2. www.eazynotes.com/pages/microprocessor/ 8085 - programs .html 3. www.technicalsymposium.com/microprocessor_lab.pdf  

Then must go through following sites 1.www.learn-c.org/ 2.www.cprogramming.com/ 3.www.learnconline.com/ 4.www.c4learn.com/ 5.www.tutorialspoint.com/cprogramming/ Go through above listed sites that will definately help you. Thanks

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NPTEL provides E-learning through online Web and Video courses in Engineering, Science and humanities streams. The mission of NPTEL is to enhance the quality of Engineering education in the country by providing free online courseware click on following link and enjoy learning through expert's lectures... http://nptel.ac.in/  

Free analog electronic circuit simulators*.Electric VLSI Design System, used to draw schematics and lay out integrated circuits*.gpsim*.SPICEand variants*.Oregano (software)Linux or BSD*.Online electronics and electric circuit simulator– Online simulation for most popular electronics and electric circuitsFree digital electronic circuit simulators*.KTechLab*.Chipmunk-diglog[1]*.TkGate[2]*.IRSIM, often used withMagic (software)[3]*.Deeds*.Hades*.SidicS 0.782[4]*.jCircuits*.Logisim*.Logic CircuitFree mixed-signal (analog & digital) electronic circuit simulators*.GNU Circuit Analysis Package(Gnucap)*.Ngspice, including Online SPICE[5]*.Falstad Circuit Simulator Applet, Paul Falstad's online java circuit simulator[6]*.GeckoCIRCUITSGPL software, online applet version (Java)[7]*.Quite Universal Circuit Simulator(Qucs)Simulators with proprietary licensesAnalog electronic circuit simulators*.CoolSPICE- Free student version has GUI schematics editor*.LTspice, freeware developed by semic...

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