The bulky batteries that power mobile devices could one day be extinct. Oki Printed Circuits has showcased technology that embeds a 170?m-thick thin-film all-solid-state lithium-ion (Li-ion) ...

Game-show "contestant-selection" controllers aren't new. But the designs are complicated, especially as the number of inputs grows. This contestant controller is simple and expands easily. The idea is ...

This is a simple password based door locking system circuit designed using 8051 microcontroller. It provides control to the actuating the load. It is a simple embedded system with input from the ...