ENIAC, developed during World War II, was the world's first general-purpose electronic computer

 

ENIAC, developed during World War II, was the world's first general-purpose electronic computer and was primarily used for calculating artillery trajectories. The calculations were based on the method of numerical integration (Euler's method), updating position and velocity at small time intervals while considering gravity and air resistance. ENIAC used decimal fixed-point arithmetic, processing each digit sequentially and performing additions, subtractions, and integrations digit by digit. Today, JavaScript can easily replicate such numerical operations and sequential logic, making it possible to simulate ENIAC’s ballistic calculations accurately and at high speed. Even digit-wise carry operations and integrator modules can be emulated in JS. With UI and visualization, a full ENIAC simulation is achievable. The process begins with replicating the mathematical model and gradually extends to reproducing hardware-like behavior.