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What are the four main functions of a computer?
1.) Input - Information you put into the computer by way of keyboard, mouse, or stylus. 2.) Processing (CPU) - Also known as the "Brain" of the computer. Processes the information you put in into human readable form. A.) There are 3 C's of processing. 1.) Calculate - Addition, Subtraction, Multiplication, and Division 2.) Copy - happens many times with each instruction that is processed, between registers in the CPU, Devices in the system, and different addresses in the memory. 3.) Comparing - Everytime data is copied, the original data set must be compared to the new data set and when data is being sorted, values in the database compared to the sort string. When datasets are being searched, the database must be compared to the search stream. 3.) Output - The information you put into the computer is seen on the monitor screen and can be printes out on paper and is readable. 4.) Storage - Either the computers memory, CD's, DVD's, Floppy Disc's, USB Flash Drives, ZIp DIsc's, etc.
What is the difference between A and AB class tube circuitry?
Same difference for tube or solid state circuitry! The classes refer to the biasing of the transistor(s) or tube(s) during quiescent (no signal) conditions. In class A, there is one output device. It is always on, or conducting. During quiescent conditions, it is biased on so that the output terminal (plate or collector) is at about 50% of the supply voltage. This offset voltage must be removed with a transformer or coupling capacitor so the output of the stage is 0V with no signal applied. As the input signal varies, the device conducts harder, toward saturation, or less, toward cutoff. As long as the stage is not driven into clipping, class A amplifiers can have very low total distortion, and NO crossover distortion, since they never turn off. Many audiophiles consider class A to be the best possible arrangement for audio reproduction. The biggest drawback is since the device is about half on even with no signal applied, the power dissipation is huge! You can always spot a class A amp by its mammoth heat sinks or its size. I've seen class A monoblocks about a cubic foot in size that only put out 15 watts! Class B amps, commonly called push-pull, have two devices, and bipolar power supplies (where you have a positive, a negative, and a common, like 45-0-45). During quiescent conditions, both devices are off, and the output is 0V. There is no need for coupling caps or transformers, since there is no big voltage offset at the output. As the input swings positive, one of the devices turns on, and 'pushes' the output up towards the positive rail. As the input swings negative, the first device turns off, then the second device turns on, 'pulling' the output towards the negative rail. The good news is that quiescent current is almost zero, so dissipation is much less, especially with no signal. The bad news - there is a spot, where the input signal passes through zero, where both devices are off. This creates a little flat spot in the output signal, the dreaded 'crossover distortion' that audio purists hate. What if you create a hybrid that looks like a class B stage, but where both devices are biased on just a little during quiescent conditions. Like a class A device, just not as much. What would happen? Watch the signal as it starts down from the positive peak: The positive device is almost saturated (fully on). The negative device is in cutoff (fully off). As the input starts to go down, the positive device conducts less and less. As it APPROACHES zero volts out, the negative device starts to conduct. When the output EQUALS zero volts out, both devices are conducting a little, so they cancel each other out. As the output LEAVES zero, the positive device goes into cutoff, and the negative device conducts more and more, pulling the output negative. See what happened? There was never a time when both devices were off. Instead, there was a smooth 'handoff' between the two as the signal passed zero. This is a class AB amp. Properly designed class AB stages can come close to the performance of a pure class A amp while still maintaining fairly low quiescent current, and have much better efficiency too. The audio guys will, of course remind us that they will NEVER be as good as a class A!
What does a news director do?
A news director is responsible for overseeing the newsroom's operations, making editorial decisions, managing staff, setting coverage priorities, and ensuring the quality of news content across all platforms. They also collaborate with other departments to develop strategies for news coverage and audience engagement.
What is the price of the Android app World Newspapers?
The Android app World Newspapers is free. One can get it from sites like amazon. It is compatible with Kindle Fire and other Android devices. It features international news, financial news and entertainment news, etc.
What is the latest news regarding the Motorola company?
The latest news regarding Motorola is that Motorola is going to cut 20% of their workforce. Motorola is going to downsize their cellphone lineup and focus on a few devices.
What are some challenges to a 24 7 news environment?
Challenges of a 24/7 news environment is that news is constantly changing. Many things can happen in a blink of an eye. People who work in this environment need to be on constant watch,they need to monitor many different news devices so nothing will be missed.
What is name of application that allows viewing of Greek newspapers on an Android based device?
Greece News is an application that allows users to view Greek newspapers on Android devices. Greece News can be installed for free from the Google app store.
What's happening in tech news?
One recent event of interest in technology news is that Hewlett-Packard has announced that it is halting the operations for its WebOS devices. This will include the WebOS phone made by HP, such as TouchPad and the unreleased Pre 3.
Which politician replaced by tub of lard on Have I got news for you?
Roy Hattersly.. he had cancelled a couple times last minute and it was thought the tub of lard would be as funny and have as good of an input
What is Palm Inc vision statement?
"Palm's mission statement is to provide intuitive mobile solutions that allow businesses and consumers to connect their information in more useful and usable ways". I pulled it from this site: http://www.visagemobile.com/news/news/managing-mobile-devices-news/3736/hp-to-buy-smartphone-maker-palm-for-1-2-billion/
How long does news take to travel?
In today's world, instantaneous. With access to websites like Twitter and Facebook on personal mobile devices, theoretically anything can be reported in the blink of an eye.
Is poczta wp pl something Polish?
Wirtualna Polska is a Polish-based news website. If you are trying to view this website in English, there are a variety of online language translation devices to help.
