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XY Text Writer

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Uses the 33522A waveform generator to write text on scope screen. Turns scope into message board.

Letter_A()
function [y x] = Letter_A()
	%Create the letter A
    %[y1 x1] = Linv_Dia_Line();
    y1 = [.1:.24:2.5];
    x1 = [.0418:.0418:.46];
    x1 = x1 - .05;
    %[y2 x2] = Rinv_Dia_Line();
    y2 = [.1:.24:2.5];
    x2 = [.46:-.0418:0.0418];
    x2 = x2 + .55;
    %[y3 x3] = Mid_Hor_Line();
    y3 = [0 0 0];
    y3 = y3 + 1.4;
    x3 = [.3:.2:.8];
    y = [y1 y2 y3];
    x = [x1 x2 x3];

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