Recently I bought a little gizmo called as “USB Charger Doctor” from an online store. The little usb bus powered device features a passthrough usb connection to connect the usb source port and usb ...

In a commercial manner, “usb condom” is a security device for preventing data theft through universal serial bus (usb) interface, and is widely used by many smart phone owners to protect their ...

As mentioned i have a circuit that transmits data through light(VLC) and receives it through phototransistor. The aim is to transfer a file from one PC to another PC hence we used a serial port DB9 ...