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Things to Look for When Buying a Laptop Computer
Portable computing has come of age since the turn of the 21st century, with power and features to rival all but the most potent of desk-bound PCs. Unfortunately, it's also a very confusing category. Manufacturers advertise their products as laptops, notebooks, netbooks or tablets, and the definitions of those terms can be vague. It's more useful to think of how you'll use the computer and how much you want to spend.
What is VoIP?
Voice Over Internet Protocol is a type of technology that is used to connect phone calls. As the name implies, VoIP uses the Internet as the main pathway for sending and receiving audio. Many traditional phone providers charge fees based on the distance that a call travels. The arrangement of the Internet allows data to be distributed efficiently and calls to be made at low rates. This digital approach is increasingly popular in areas where high-speed Internet is available.
What is the iPhone 4S?
Released in October 2011, the iPhone 4S added several features and capabilities to the previous iPhone 4 model. Several existing features were also upgraded. You can purchase the iPhone 4S in a 64GB version; previously 32GB was the maximum. Although the look and size remained the same as the 4, the latest iPhone 4S offers consumers features that make it faster and more connected than any of its predecessors.
How to Lock an iPhone
If you choose not to keep your iPhone secure by locking it with a passcode, you're not alone: a 2011 study by research firm Javelin Strategy and Research found that 62 percent of smartphone users don't use passcode protection. The same study also found that smartphone users are one-third more likely to suffer identity theft, making it imperative that you secure your phone with a passcode.
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One of the simplest ways to improve performance in your MacBook Pro is to upgrade the random access memory, which acts as a temporary data storage area where information is placed to access quickly and out of sequence. The more RAM you have installed on your system, the faster your various programs can run because the processor isn't accessing the slower hard drive for information. Only the original MacBook Pro models offer the option to upgrade the RAM, and the last of these models were released by Apple in late 2012.
Digital Subscriber Line or DSL Internet services operate on existing phone lines. Signals from your DSL service provider are sent from a local hub, called a Digital Subscriber Line Access Multiplexer, or DSLAM. Decoding these modulated feeds requires a modem, which processes the data transmitted to and from your computer. DSL modems are commonly called "gateways," another term for a combination DSL modem and router. A DSL modem provides an always-on connection, differing significantly from dial-up services that also use copper phone wires. The service's high speeds and dedicated lines offer typically reliable service and quick Internet access.