# How does the eniac computer work?

The Electronic Numerical Integrator and Computer (ENIAC) is often considered the world’s first general-purpose electronic digital computer. Developed during the 1940s, this massive machine became the foundation for modern computing. In this article, we will explore how the ENIAC computer works, taking a closer look at its components and operation.

### How does the ENIAC computer work?

**The ENIAC computer works by utilizing electronic circuits composed of vacuum tubes to perform complex arithmetic and logical operations. It relies on a series of interconnected modules, each serving a specific purpose, to process data and solve mathematical problems.**

During its operation, the ENIAC computer performs calculations through a combination of parallel processing and sequential program execution. The user provides inputs through punched cards or switches, and the machine then performs the desired calculations, producing outputs on a printer or other display devices.

### 1. How large is the ENIAC computer?

The ENIAC computer occupies a substantial space of approximately 1,800 square feet, which is equivalent to a small house’s area.

### 2. How many vacuum tubes does the ENIAC computer contain?

The ENIAC computer incorporates around 17,468 vacuum tubes, which are responsible for performing the logic and arithmetic operations.

### 3. How fast is the ENIAC computer?

The ENIAC computer could perform calculations at an impressive rate of about 5,000 additions or subtractions per second, significantly faster than manual computation.

### 4. What type of programming language does the ENIAC computer use?

The ENIAC computer does not employ a programming language as we know it today. Instead, it relies on manual reprogramming by connecting cables and switches.

### 5. How is the ENIAC computer programmed?

To program the ENIAC computer, its operators physically reconfigure its wiring and switches, connecting different modules to perform specific calculations.

### 6. Does the ENIAC computer have memory?

The ENIAC computer does not have a modern concept of memory. Instead, it stores information temporarily in electronic circuits called accumulators.

### 7. How reliable is the ENIAC computer?

The ENIAC computer had a mean time between failures (MTBF) of approximately eight hours, making it less reliable compared to modern electronic computers.

### 8. What kind of problems can the ENIAC computer solve?

The ENIAC computer was designed to solve a wide range of numerical problems, including those related to mathematical calculations, physics, and ballistics.

### 9. Did people find the ENIAC computer useful?

Yes, the ENIAC computer was crucial in performing complex calculations for scientific and military purposes, such as improving artillery accuracy and determining missile trajectories.

### 10. What are the limitations of the ENIAC computer?

The ENIAC computer lacked the flexibility to easily switch between different computational tasks or be reprogrammed without physically changing its wiring and switches.

### 11. How does the ENIAC computer compare to modern computers?

The ENIAC computer was much larger, slower, less reliable, and significantly less powerful compared to modern computers. However, it paved the way for future advancements in computing technology.

### 12. Where is the ENIAC computer now?

The original ENIAC computer is no longer intact. After being used for various purposes and demonstrations, it was dismantled and its components were repurposed or preserved in museums. Some sections of the ENIAC computer are on display at the Smithsonian Institution in Washington, D.C., showcasing its historical significance.

In conclusion, the ENIAC computer revolutionized the world of computing by being the first electronic digital computer capable of performing general-purpose calculations. Despite its size, limitations, and lack of modern features, it set the stage for the development of smaller, faster, and more efficient computers that shape our world today.

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