data encodings - Beginners / Lab Assignments Source Code in C++

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Home » C++ Home » Beginners / Lab Assignments Home » data encodings

A D V E R T I S E M E N T

Title	data encodings
Author	diogo
Author Email
Description	various encoding techniques
Category	C++ » Beginners / Lab Assignments
Hits	383930
Code	Select and Copy the Code
Code : # include <graphics.h> # include <iostream.h> # include <conio.h> # include <string.h> # include <dos.h> int main(void) { void drawgrid(int, int, int, int); void encode(char ,char , int, int, int, int); void draw(int ,int ,char , int); char message; int len; clrscr(); cout << " DIGITAL ENCODING TECHNIQUES"; cout << " Enter the data to be encoded (max 24 bits) : "; do{ cin >> message; len = strlen(message); if(len>24) cout << "Message is greater than 12 bits, please type new message: "; }while(len>24); char o_mess =new char[len]; char e_mess =new char[len2]; strcpy(o_mess,message); int gd=DETECT, gm, i, x, y; initgraph(&gd,&gm,"..\BGI"); setcolor(8); settextstyle(DEFAULT_FONT,0,2); outtextxy(100,10,"DIGITAL ENCODING TECHNIQUES"); setcolor(YELLOW); rectangle(0,30,630,450); rectangle(1,31,629,449); setcolor(WHITE); settextstyle(DEFAULT_FONT,0,0); drawgrid(120,60,len,20); outtextxy(10,50, "Message"); x= 137; for(i=0; i<len; i++, x+=20) { if(o_mess[i]=='1') outtextxy(x,50,"1"); else outtextxy(x,50,"0"); } x=120; y=80; outtextxy(10,100, "NRZ - L"); encode(o_mess,e_mess,len,0,2,0); draw(x,y,e_mess,len2); y+=60; outtextxy(10,160, "NRZ - I"); encode(o_mess,e_mess,len,3,4,0); draw(x,y,e_mess,len2); y+=60; outtextxy(10,220, "Bipolar AMI"); encode(o_mess,e_mess,len,3,1,0); draw(x,y,e_mess,len2); y+=60; outtextxy(10,280, "Pseudo Tenary"); encode(o_mess,e_mess,len,4,3,0); draw(x,y,e_mess,len2); y+=60; outtextxy(10,340, "Manchester"); encode(o_mess,e_mess,len,0,2,1); draw(x,y,e_mess,len2); y+=60; outtextxy(10,400, "D-Manchester"); encode(o_mess,e_mess,len,4,3,1); draw(x,y,e_mess,len2); y+=60; getch(); closegraph(); return 0; } void drawgrid(int x, int y, int pulses, int width) { line(x,y,x+(pulseswidth),y); line(x,y,x,y+(width12+150)); for(int i=0; i<pulses; i++) { setcolor(LIGHTBLUE); line(x+width,y+1,x+width,y+(width12+150)); setcolor(BLUE); line(x+width/2,y+1,x+width/2,y+(width12+150)); x+=width; } setcolor(WHITE); return; } void draw(int x, int y, char data, int len) { int prev_y, curr_y; prev_y = y; for(int i=0; i<len; i++, x+=10) { if(data[i]=='2') curr_y = y; if(data[i]=='1') curr_y = y+20; if(data[i]=='0') curr_y = y+40; line(x,curr_y,x+10,curr_y); sound(70); delay(50); nosound(); if(prev_y != curr_y) line(x,prev_y,x,curr_y); sound(170); delay(50); nosound(); prev_y = curr_y; delay(10); } return; } void encode(char o_mess,char e_mess,int len,int one,int zero, int mid) { int i, j, previous=2; for(i=0, j=0; i<len; i++, j+=2) { if(o_mess[i]=='1') { if(one==0) e_mess[j]='0'; if(one==1) e_mess[j]='1'; if(one==2) e_mess[j]='2'; if(one==3) { if(previous==2) { previous=0; e_mess[j]='0'; } else { previous=2; e_mess[j]='2'; } } if(one==4) { if(previous==2) e_mess[j]='2'; else e_mess[j]='0'; } } else { if(zero==0) e_mess[j]='0'; if(zero==1) e_mess[j]='1'; if(zero==2) e_mess[j]='2'; if(zero==3) { if(previous==2) { previous=0; e_mess[j]='0'; } else { previous=2; e_mess[j]='2'; } } if(zero==4) { if(previous==2) e_mess[j]='2'; else e_mess[j]='0'; } } if(mid==1) { if(e_mess[j]=='2') e_mess[j+1]='0'; else e_mess[j+1]='2'; if(previous==2) previous=0; else previous=2; } else e_mess[j+1]=e_mess[j]; } return; }

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