In computer graphics, display systems play a crucial role in how images are generated on a screen. Two of the most widely discussed techniques are the Raster Scan System and the Random Scan System. Both approaches are used to display images, but they differ significantly in their working principles, applications, and output quality. Understanding their […]
#include <graphics.h> #include <conio.h> #include <dos.h> int main() { int gd = DETECT, gm; int x, y = 350; // Ball position initgraph(&gd, &gm, “”); // Draw Goal Post setcolor(WHITE); rectangle(450, 150, 550, 350); // Goal boundary line(450, 150, 500, 100); // Net top line(550, 150, 500, 100); // Animate Football for (x = 50; […]
#include <graphics.h> #include <conio.h> #include <dos.h> int main() { int gd = DETECT, gm; int x, y = 300; // base Y position for walking initgraph(&gd, &gm, “”); for (x = 50; x <= 500; x += 10) { cleardevice(); // Draw ground line(0, y+50, getmaxx(), y+50); // Draw head setcolor(WHITE); circle(x, y-40, 15); // […]
#include <graphics.h> #include <conio.h> #include <math.h> #include <dos.h> #define PI 3.1416 int main() { int gd = DETECT, gm; int xc = 320, yc = 240; // center of rotation (windmill hub) int length = 100; // blade length float angle = 0; // rotation angle initgraph(&gd, &gm, “”); while (!kbhit()) { // loop until […]
What is a Liquid Crystal Display (LCD)? A Liquid Crystal Display (LCD) is a flat-panel display technology widely used in electronic devices such as calculators, televisions, laptops, digital watches, and smartphones. It works by using the light-modulating properties of liquid crystals that do not emit light directly but instead use a backlight or reflector to […]
What is a Light Emitting Diode (LED)? A Light Emitting Diode (LED) is a semiconductor device that emits light when an electric current passes through it. Unlike traditional incandescent bulbs, LEDs do not rely on heating a filament. Instead, they produce light through a process called electroluminescence, making them more energy-efficient, durable, and long-lasting. How […]
What are Thin Film Electroluminescent Displays (TFEL)? A Thin Film Electroluminescent Display (TFEL) is a flat-panel display technology that produces light by applying an electric field across a thin phosphor layer placed between two electrodes. Unlike LCDs (Liquid Crystal Displays) that rely on backlighting, TFELs are self-emissive, meaning they generate light directly, ensuring high brightness, […]
What is a Plasma Panel Display? A Plasma Panel Display (PDP) is a flat-panel display technology that uses ionized gases (plasma) to produce images. Each pixel in a plasma display consists of tiny cells filled with noble gases (neon, xenon) and a small amount of mercury. When an electric voltage is applied, these gases ionize […]
What is a Flat Panel Display? A Flat Panel Display (FPD) is an advanced display technology used to present visual content in a slim, lightweight, and energy-efficient format. Unlike older Cathode Ray Tube (CRT) displays, flat panel displays do not rely on bulky vacuum tubes. Instead, they use modern electronic technologies such as liquid crystals, […]
The shadow-mask technique is a widely used method in Cathode Ray Tube (CRT) displays and early color television systems. It plays a crucial role in producing sharp, vibrant images by ensuring that each electron beam strikes the correct color phosphor on the screen. What is the Shadow-Mask Technique? In CRT displays, three separate electron guns […]
