Bitcoin is a decentralized digital currency created in January 2009, by Satoshi Nakamoto. Though the identity of the creator of Bitcoin is still mysterious. Bitcoin
Organizations rely on geographic information science (GIS) for applications ranging from navigation in autonomous vehicles to mobile games played in real-world spaces. GIS specialists reveal
The theoretical service life of LEDs produced by regular manufacturers is generally around 80,000 hours. Now, many luminous characters have not used enough for one year and began to frequently replace LED modules, which has brought a lot of trouble and economic loss to customers and advertising manufacturers.