Cable and DSL modem are typically external devices that connect to your computer’s ethernet port. However, a cable modem connects to cable wiring while a DSL modem connects to a phone jack. While these are significantly different connection, they both provide the same “always – on” Internet access for your computer. Both cable and DSL Internet connections have increased in speed over the last few years. As of early 2005, a typical cable connection supports speeds of 2 to 3 mbps, while a typical DSL connection supports speeds of 768 Kbps to 1.5 Mbps. This means cable modem usually have the capability to be faster than DSL modems.

However, a cable modem shares bandwidth with other computer in the area that also have cable Internet connections. If there are many people in your neighborhood that use the same cable service, it is likely your data transfer speeds will be reduced. DSL, on the other hand, is a direct line to the phone company, and therefore is not affected by other users. So DSL generally offers a more consistent speed.

The industry also promises more than one million profession jobs in the coming years. The propects of finding a job, with a professional course in bioinformatics under one’s belt are really immense.

Resistive touch panel contains many layers sandwiched by thin space that act as a medium to pass on the touch sense. sharp objects can damage the layers which are otherwise water and dust resistant. surface acoustic wave technology’s ultrasonic wave help pass the touch sense.

To use a TDD, the user types a message on the keyboard that is automatically converted into tones and transmitted over the phone line to another TDD , which converts the message back into text room. In this system, both the sender and the receiver of the message must have access to the technology.

Although these technologies are not typically used in the class room they enables student with disabilities to interact with each other outside of the school environment for both academic and social reasons, just their non-disabled peers do.

Security systems can also be integrated with home automation features. Various residential builders are already offering home automation and security together as an add-on feature for their clients. If you are planning to install, you can choose between wired and wireless security systems. Both types can be further divided into user friendly and high end programmable systems. Here’s the way to go for an ideal security system for your home.

Intrusion alarm system. Alarms can be either silent or very loud. A loud alarm will either frighten the intruder away or alert the neighbours that someone is trying to invade your house. Alarms fitted into the door sound right at the point of entry. Others can be connected to a central control pad, which sounds if any point of entry is breached.

Generally an intrusion alarm systems has different sensors, magnetic contacts, hooters etc,.. linked to a control panel. An auto dialer with prerecorded message can also be integrated, which will automatically dial the fed numbers and leave emergency message. With this feature, if someone intrudes your home the security systems will call the police directly to inform them.

While selecting a warning alarm system, ensure that,
1. It doesn’t produce false alarm.
2. It has enough battery backup to meet unpredictable power conditions.
3. It is user friendly with minimal and easy controls.
4. If sensors like PIR are used, it must be EMI/RFI protected.
5. Magnetic sensors are easy to align.
6. The sound output is above 105dB at 1 metre.