Write the history of eniac computer.

ENIAC (Electronic Numerical Integrator and Computer) was the first general-purpose electronic digital computer in the world. It marked the beginning of the modern computer era and replaced slow mechanical calculating machines.

2. History & Development

Developed during World War II

Designed by:

J. Presper Eckert

John Mauchly

Developed at:

University of Pennsylvania

Construction period: 19431945

Officially unveiled: 1946

It was built for the U.S. Army to calculate artillery firing tables.

3. Technical Features

Used about 18,000 vacuum tubes

Weighed around 30 tons

Occupied 1500 square feet area

Consumed huge electricity (~150 kW)

Programming done using:

Plugboards

SwitchesNo keyboard, mouse, or operating system existed.

4. Working Principle

ENIAC worked on electronic signals instead of mechanical parts.

Data represented in decimal form (base-10)

Calculations done using electronic pulses

Operations:

Addition

Subtraction

Multiplication

Division

It processed around 5,000 calculations per second, which was extremely fast at that time.

5. Applications

ENIAC was mainly used for:

Military calculations (artillery tables)

Weather prediction

Atomic energy calculations

Scientific research

6. Importance / Advantages

First fully electronic computer

Much faster than mechanical machines

Foundation of modern computing systems

Introduced concept of programmable machines

7. Limitations

Very large size

High power consumption

Generated a lot of heat

Difficult to program (manual wiring)

No stored program concept

8. ENIAC vs Modern Computers

Feature

ENIAC

Modern Computer

Size

Room-sized

Portable

Speed

5,000 ops/sec

Billions ops/sec

Technology

Vacuum tubes

Microprocessors

Programming

Manual wiring

Software-based

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