LED display (IMAGE) Penn State Caption A mechanical integrated circuit material can perform computational tasks like a computer without needing the computer. Here, the example material performs arithmetic, compares numbers, and converts the digital information into LED display form. Credit Charles El Helou/Penn State Usage Restrictions No restrictions. License Public Domain Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.