TREE

The title refers to a popular TV game show where the contestants each have a big button.  The  game show  host  asks  a  question and the first contestant to press their but-ton makes an illuminated indicator light up on their desk. The other contestants’ buttons  are automatically inhibited, so that everyone can see who was the first contestant to press their button, and so is allowed to answer the question. The project described here shows how to build a similar sortof  refereeing device yourself, using simple resources and without needing a microcontroller, which is  pretty rare these days! The basic circuit is for  just two contestants, but the modular design  means it can easily be expanded.   Circuit diagram :   Going for Gold Circuit Diagram   The diagram shows three buttons: S2 and S3  are the buttons for the two contestants, S1 is  the button for the host, which allows them to  reset the circuit before each fresh question.  The ‘brains’ of the circuit is IC1, a 4013 du...

Microsoft has officially unveiled the Lumia 930 smartphone version and 830 in the body with gold trim. The devices will be available in black and white with a golden frame over the face. Lumia 830 Gold will go on sale in February in Europe, Asia-Pacific, China, India, the Middle East and Africa. Lumia 930 Gold will be a little earlier - in January - in some countries in Europe, the Asia-Pacific region, the Middle East, Africa and China . The exact cost of new devices is not reported, it will depend on the region. From the viewpoint of characteristics of the model is obviously not changed. Lumia 930 smartphone features a 5-inch Full HD, 20-megapixel camera, quad-core Qualcomm Snapdragon processor 800, 2 GB of RAM and 32 GB of internal memory. Lumia 830 is built on a quad-core Qualcomm Snapdragon 400, equipped with a 5-inch touchscreen display with a resolution of 1280 x 720 pixels and 10-megapixel camera. Both models operate on the basis of OS Windows Phone 8.1.