If you use a # hashtag on twitter, it marks the tweet with that topic. They are used for topics. If you make a tweet about birds, you would say #birds. On the other hand if you want to send a tweet that's to a particular Twitter user or other person in the world, then you use an @ symbol to say the tweet is addressed to that person. I have used it on Facebook if there is a post, and a whole bunch of comments, and I want to respond to one of the comments, but it's not the most recent comment. @... [+]

The TL-WR902AC is designed for use with tablets, smart phones, handheld game consoles and other portable electronic wireless devices. The device, which can be powered by an external power adapter or USB connection to a computer, can conveniently connect to the internet and share the connection around an average sized room at 300Mbps.The device’s tiny size makes it ideal for use on the road and is powerful enough to satisfy almost any basic wireless application... [+]

Com és de coneixement general, una gran part de l'espectre d'emissió de televisió (a Catalunya i resta del món) està sent reassignat per al servei de telefonia mòbil 4G/LTE de pròxima generació. El llançament es produirà de facto a començament de 2015, i els primers informes suggereixen que aquesta reassignació de l'espectre pot interferir amb els aparells receptors de televisió existents. Per protegir-se contra això, s'ha dissenyat aquest filtre passa-baix que deixa passar la... [+]