Technical description of cell phones

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Technical description of cell phones

Next On a "complexity per cubic inch" scale, cell phones are some of the most intricate devices people use on a daily basis.

Technical description of cell phones

Modern cell phones can process millions of calculations per second in order to compress and decompress the voice stream. If you have read How Cell Phones Workyou know that they can transmit and receive on hundreds of FM channels, switching channels in sync with base stations as the phone moves between cells.

Technical description. Our “Help Desk” located at our Service Center located at Vardan Mamikonyan 23, is ready to advise our subscribers on all technical and operational issues relating to our new 3G network. Cell phones are now practically as common as wristwatches. Perhaps for good reason, too: The newer models of cell phones (called "smart phones" as of ) allow users to check e-mail, surf the Internet and even use computer programs such as Microsoft Word or Microsoft attheheels.com://attheheels.com /basic-instructions-on-using-cell-phone.  · Cell phones have evolved immensely since , both in design and function. From the Motorola DynaTAC, that power symbol that Michael Douglas wielded so forcefully in the movie “Wall Street”, to the iPhone 3G, which can take a picture, play a video, or run one of the thousands applications available from the Apple attheheels.com://attheheels.com

If you ever take a cell phone apart you will find that it contains just a few individual parts: A microscopic microphone An LCD or plasma display A keyboard not unlike the one we saw in a TV remote control An antenna A battery An amazing circuit board containing the guts of the phone The circuit board is the heart of the system.

Here is one from a typical Ericsson cell phone: In this picture several of the components are identified. Starting from the left you the see the Analog-to-Digital and Digital-to-Analog conversion chips.

The DSP is a "Digital Signal Processor" -- a highly customized processor designed to perform signal manipulation calculations at high speed. The microprocessor Ericsson phones use an ASIC version of the Z and memory handle all of the housekeeping chores for the keyboard and display, deal with command and control signaling with the base station and also coordinate the rest of the functions on the board.

The RF and power section handles power management and recharging and also deals with the hundreds of FM channels. Finally the RF Radio Frequency amplifiers handle signals in and out of the antenna.

The Evolution of Cell Phone Design Between | Webdesigner Depot

What is amazing is that all of that functionality -- which only 30 years ago would have filled the entire floor of an office building -- now fits into a package that sits comfortably in the palm of your hand.

Quiz Corner How much you know about cell phones and what they do? Test your knowledge with our Cell Phone Quiz!Cell phones: most frequent type of call use in the UK Premium Industry-specific and extensively researched technical data (partially from exclusive partnerships).attheheels.com A technical person seeking a job as a Cell Phone Technician in a shop to handle all cell phones repairs required by clients and provide high quality of services.

Summary of Qualifications Proficient in cell phone software programs. A cell phone technician carries out proper fault diagnosis to improve the quality of the phone.

He also carries out repairs on mobile phones to improve the phones' productivity. The main services offered by a cell phone technician are making repairs and keeping customers informed about services provided by the company -- including .

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A successful example resume for the job highlights duties such as detecting issues, listen to customers’ description of phone problem, running tests, replacing parts, and reporting repairs to managers and manufacturers.

Technical description of cell phones

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