BASIC SIGNAL GENERATOR

IT IS A SIGNAL GENERATOR GIVING 6 OUTPUTS: Ramp , Rectangular ,Sine,Step, Triangular ,Exponent and Impulse

% Clear workspace and close figures
clear;
close all;
clc;

% User input for function selection
disp('Select the function to plot:');
disp('1: Ramp Function');
disp('2: Rectangular Pulse Function');
disp('3: Sine Wave Function');
disp('4: Square Wave Function');
disp('5: Triangular Pulse Function');
disp('6: Exponential Function')
disp('7: Impulse Function')
choice = input('Enter your choice (1-7): ');

% Ramp Functions
if choice == 1
    t1 = -10:0.1:10;
    n1 = length(t1);
    rampf = zeros(n1, 1);
    for i = 1:n1
        rampf(i) = t1(i);
    end
    plot(t1, rampf);
    title('RAMP FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('Ramp');
    grid on;

    % Rectangular Function
elseif choice == 2
    t2 = -10:0.1:10;
    n2 = length(t2);
    rectanglef = zeros(n2, 1);
    for i = 1:n2
        if (abs(t2(i)) <= 1)
            rectanglef(i) = 1;
        else
            rectanglef(i) = 0;
        end
    end
    plot(t2, rectanglef);
    title('RECTANGULAR PULSE FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('Rectangle');
    grid on;


    % Sine Function
elseif choice == 3
    t4 = -10:0.1:10;
    n4 = length(t4);
    sinef = zeros(n4, 1);
    for i = 1:n4
        sinef(i) = sin(2 * pi * t4(i) * 0.5);
    end
    plot(t4, sinef);
    title('SINE WAVE FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('Sine');
    grid on;

    % Square Function
elseif choice == 4
    squareWave = @(t) square(2 * pi * t);
    t = -10:0.1:10;
    y = squareWave(t);
    figure;
    plot(t, y);
    title('SQUARE WAVE FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('square');
    grid on;

    % Triangular Function
elseif choice == 5
    t6 = -10:0.1:10;
    n6 = length(t6);
    triangle = zeros(n6, 1);
    for i = 1:n6
        if (abs(t6(i)) <= 2)
            triangle(i) = 1 - abs(t6(i) / 2);
        end
    end
    plot(t6, triangle);
    title('TRIANGLE PULSE FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('triangle');
    grid on;
    %exponential function
elseif choice == 6
    t6 = -10:0.1:10;
    n6 = length(t6);
    exponent = zeros(n6, 1);
    for i = 1:n6
        exponent(i) = exp(t6(i));
    end
    plot(t6, exponent);
    title('EXPONENTIAL FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('Exponent');
    grid on;

    %impluse function
elseif choice == 7
    t7 = -10:0.1:10;
    n7 = length(t7);
    impulse = zeros(n7);
    for i = 1:n7
        if(t7(i)==0)
            impulse(i)=1;
        end
    end
    plot(t7,impulse);
    title('IMPULSE FUNCTION');
    xlabel('Time (s)');
    ylabel('Amplitude');
    legend('impulse');
    grid on;

else
    disp('Invalid choice. Please select a number between 1 and 6.');
end