Tag Archives: Cell

Wonders of Touch Screen Technology

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Technology is progressing constantly and with this it is introducing new changes every day. In fact, it is technology that has largely made things easier for men. Touch screen technology is one of the wonders of the modern world that has now become a part of our life. There are different electronic devices that have this technology and they prove to be really very beneficial. Touch screen technology has been in the market for quite a few years now and its amazing wonders have really changed the lives of men. If you have not yet bought yourself a touch screen device, then it is high time that you go and get one.

The touch screen technology was originally developed mainly to be used in air traffic control and in nuclear power plants. However, with time, its uses have largely increased and now it has become one of the most important methods of spreading the use of digital media. The advent of this technology has greatly minimized the usage of the mouse and the keyboard. As a result, the people who lacked expertise in handling these devices can now use digital devices just by the touch of a finger.

This technology has been applied to various devices in the present world. Touch screen technology simply requires the touch of a finger to get a particular function done. The sensors are highly sensitive and there is not the need of even applying pressure. The surface is actually designed to be so flexible that it can easily recognize a contact on a particular part on the screen. On the basis of this recognition a function is actuated. This technology also functions at high speed and efficiency as a result of which the response time is extremely low. In fact, the device responds by performing the function immediately with the time difference being negligible. This in turn speeds up the flow of information. Any kind of information that is required immediately is processed within nanoseconds.

Touch screen technology also makes navigation very easy. Using this technology in a device like a cell phone does not require keys to begin a particular function. In most cases, you would be given a special pen which you require to touch the screen with to operate the phone. At times, fingers can also replace the function of that pen. Thus this is highly a user-friendly facility that is present in most of the latest devices of today.

The touch screen technology is largely used in many different fields, right from the big industrial houses to banks and other organizations. It is very practical in nature and even an ordinary individual can make use of this technology by owning a cell phone. Many people are taking full advantage of this technology in their everyday life. The future will certainly see the application of the touch screen technology on a much larger scale. We are likely to see a number of wonders of this technology in the coming years.

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Tracking Software for your Cell Phone

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Some people are very interested in using mobile phone as the best choice for their mobility. You may know that mobile phone is become one of the most essential part in your life. You can make sure that you can feel easy to customize your own mobile phone by using the proper application. To customize your own mobile phone, you need to download some application first.

Today, there are thousand online web pages that provide the best selection of phone application software. You can try to go to Cellphonetrackers.org to get the best choice of application. If you want to know the proper location of your mobile phone or your family member, you can try to choose cell phone tracker. This is become the most popular GPS software application that will be very useful to make your mobile phone feels more interesting. You can try to install Glympse as the best choice of free cell phone tracker. This is become the best application that you can easily install to your laptop. You don’t need to register your account to download it because you can feel easy to install it. This application can be very helpful to calculate your speed and also gives you expected arrival time.

Sometimes, you may feel annoying if you have a phone call from unknown people. If you are using this application, you can get cell phone lookup to know the location of the number. You can also feel easy to search it in white pages or another popular search engine service. You can get the fastest result in finding the location of that mobile phone because they have a lot of phone number collection at their databases. You can search the owner details quickly. For more information about their service, it is better for you to try finding some information at their web page.

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Pivot Tables in Microsoft Excel – Grouping by Dates Is the Best Feature in MS Excel Pivot Tables

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Creating a Pivot Table with Grouped Dates

Imagine that you have the output from an accounts system: a table of payments made by your company. For each row of the table in Excel you have:

  • the supplier code
  • the amount of the purchase
  • the date the purchase was made

You want to see the trend over time for each supplier, so you create a pivot table showing this data. To do this (at least for Microsoft Excel 2007 and Excel 2010):

  1. Select a single cell in your table.
  2. Click on the INSERT tab in the ribbon, and choose to insert a pivot table.
  3. Choose OK to choose all of the default options (this will create a new worksheet).
  4. Drag the supplier code onto the ROW LABELS section of the pivot table, the purchase date onto the COLUMN LABELS section and the amount of the purchase onto the VALUES section.

You should now have a pivot table with the supplier codes going down the left-hand side, the unique dates going across the top and the total spending for each combination of date and supplier as values in the middle. We now want to group the dates together into months, quarters or years.

To do this, click on the first date in your column headings. Now click on the DATA tab on the ribbon, and choose GROUP. A dialog box should appear, and you should be able to choose to combine dates together into months and/or quarters and/or years. Hey presto! an instant monthly or quarterly or annual reporting facility.

What Can Go Wrong

If you get the message CANNOT GROUP THAT SELECTION when you do the above, the reason is almost certainly that not all of your dates are dates. For example, if you have 9,999 dates and just one cell which isn’t a date, Excel will still refuse to group by your date field.

To solve the CANNOT GROUP THAT SELECTION problem, you need to persuade Excel that every single one of the dates in the date field column really is a date. To do this, first check the format – a left-aligned value can be a giveaway, since Excel will right-align dates by default. Another common problem is that dates imported from a mainframe system can appear with full stops (aka periods to American readers) instead of slashes: 25.12.2099 rather than 25/12/2099.

One way to spot problems like this is to use the ISNUMBER function, which returns either TRUE or FALSE depending on whether Excel recognises a date or not. Since Excel treats dates as numbers behind the scenes, you should look for the FALSE values returned by the ISNUMBER function and correct the corresponding dates.

One final point – Excel can be slow to recognise changes – you might find that it helps to save, close and reopen a spreadsheet before retesting grouping in your pivot table

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How Batteries Work

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In order to explain how batteries work you are going to need to understand whats inside them. Same as it would be impossible to explain how sun works without knowing what types of gasses its made of. Now before I go into a rant talking about hydrogen and fusion lets dive right into batteries. This would be easier to understand if the you have some knowledge about chemistry and physics. But if you don’t then that’s fine also.

Any object that can produce a flow of electricity without actually moving (like a battery or a solar panel) is known as a Cell. No matter what type cell it is they all have a few things in common. All cells possess two different plates. These plates are separated from one another. One is the positive plate while the other is the negative plate. They are both placed in a special type of liquid chemical that conducts electrons (electricity).

Both of the plates have to be made out of different types of material then its counterpart. This way they can both react with the chemical in different ways which allow the electricity to be drawn out of the battery. If both plates were made out of the same material then there wouldn’t be a difference in voltage. Therefore no electricity could be taken from the cell or put in the cell.

As more and more electricity is taken out of the cell then the both the plates and the chemical change in composition. Until such a point in which no more electricity can be taken out because the plates and the chemical can’t change any more. Also if you add electricity (charge it) then the chemical and the plates both start changing back though this constant change will eventually wear it out.

The difference between double A and triple A is in the composition of the plates and the chemical. The types of metals used to build batteries include Zinc Alkaline Carbon and Nickel. The size also matters as you can guess the bigger the battery then the more energy it produces and the more energy it can output at any given time.

The components of average battery are:

Container
A steel can to contain the other ingredients.

Cathode
Cathodes are the electrodes reduced by the electrochemical reaction.

Separator
A fabric that separates the electrodes.

Anode
Anodes are the electrodes that are oxidized. Taking the form of powdered zinc.

Electrodes
The area where the actual reactions take place

Electrolyte
Acts as the medium between the ions within the cell. Carrying the ionic current.

Collector
A pin down the center of the battery that collects electricity and takes it outside of the battery.

Also just a little interesting fact to put at the end of the article. Archaeologists have found ancient primitive batteries in Egypt. What their purpose was is unknown.

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