The circuit in Figure 1 uses only five I/O lines to drive a dot- or bar-graph display of 20 LEDs. Although this version of the design uses a small and inexpensive one-time-programmable microprocessor, ...
With the rapid growth of embedded systems, and, in particular, IoT devices, there has been a growing need for improvements in the rechargeable battery systems that power them. In particular, many ...
The Super Auto Eject Deluxe Cover with Bar Graph Display includes a built-in, easy-to-see indicator with Red 10 LED lights and three green AC 'power on' lights. These newly redesigned heavy duty ...