20 Oct 08 Components of a Telephone Set

All telephones contain the same basic components, which are Microphone or Transmitter, Speaker or Receiver, Hybrid Coil, Balancing Network, Switch-hook, Ringer (Bell) and Dialing Mechanism. The handset has both the transmitter and the receiver. The transmitter is a microphone that converts sound into electrical signals. The receiver is a speaker that converts electrical signals into sound. The telephone handset uses four wires. Two wires go to the transmitter and two go to the receiver. However, the telephone line to the local exchange has only two wires. To make this conversion of four wires into two, the hybrid coil is used. It is an arrangement of transformers specifically designed to do the conversion. The balancing network allows some of the transmitted sound to pass into the receiver which helps in reducing the echo.

12 Oct 08 Keep All Your Critical Data Safe

If you are a small business owner or a work from home professional then you would definitely know how important it is to keep a backup of all your data. In case your laptop or computer suddenly stops working then your entire business would be ruined. Taking regular backups of your data will help in avoiding such situations. It is not possible to take backups in CDs or DVDs every now and then. In such cases the best option would be to go for professional backup services.

IDrive is a company that provides online backup services typically for small businesses and individuals. They provide up to 150GB storage space per month at just $4.95 which is probably a dream come true for most people. Their service includes the download of a desktop client application which will reside in your computer and take backups at regular intervals by sending the necessary data to IDrive’s server. They have recently come up with the version 3.0 of their application and this can be used on both Windows and Mac. It is definitely a great service and people who have critical data can definitely go in for these backup services. They have recently even launched TV commercials showcasing the services offered by them.