Specify the data representation stages in computer systems

Graphical representation is the visual display of data using charts. Graphical representation helps to quantify, sort and present data in a method that is understandable to a large variety of audience.

Creating charts has several step process.

1. Select your data and pick the chart you want from a list of recommended charts. There are: bar, line, pie, column, area, scatter charts etc.

2. Add a chart title. You can replace the placeholder chart title with an appropriate chart title, format it the way you want, or move it to a different place in the chart.

3. Add data labels to a chart. Make a chart easier to understand by adding data labels that show details about a data series or its individual data points.

4. Change axis labels in a chart. Axis labels are shown for any horizontal, vertical, and depth axes in your chart. Labels automatically display text from the source data to describe the data that’s shown, but you can use your own text instead.

5. Change the color or style of a chart. If standard colors and chart styles don’t strike your fancy, it’s easy to change both. You can quickly pick what you like from a wide range of options in the color and style galleries.

6. Format your chart. A formatting task pane makes it easier to format any chart element. To open it, right-click any chart element.

7. Save a custom chart as a template. If you plan to use the chart you’ve created again, you can save it as a template that you can apply just like any other chart.

Specify concepts of mobile technologies.

In the computer world, the term mobile device refers to any electronic device that be easily moved from one location to another. Overtime, this category has expanded to include cell phones, laptops, smartphones, smartwatches, and other portable devices. The picture shows an example of one of the most common mobile devices today: the tablet computer.

Mobile device history.

Laptops became one of the first mobile computing devices by eliminating the wires between the computer and its peripherals; then integrating them in to one unit. Today, mobile device usually refers to any hand-held computer capable of running applications that can connect to the Internet wirelessly. However, even by today's more scrupulous standards, the category keeps expanding with new inventions. As is true in any branch of computing, our mobile devices continue to offer more advanced functions while reducing size and weight.

Mobile technology is the technology used for cellular communication. Mobile code division multiple access (CDMA) technology has evolved rapidly over the past few years. Since the start of this millennium, a standard mobile device has gone from being no more than a simple two-way pager to being a mobile phone, GPS navigation device, an embedded web browser and instant messaging client, and a handheld game console. Many experts argue that the future of computer technology rests in mobile computing with wireless networking. Mobile computing by way of tablet computers are becoming more popular. Tablets are available on the 3G and 4G networks.

One of the most important features in the 4G mobile networks is the domination of high speed packet transmission or brust traffic chanells. The same codes used to in the 2G 3G networks are applied to 4G mobile or wireless networks. 

 

Specify information processing in tabular processor

Microsoft Excel 2007 is an electronic spreadsheet software package that allows you to organize data in a tabular format, perform mathematical calculations, and analyze data. This software includes functions, formulas, and charts. It is commonly used in business, engineering, mathematics, and statistics.

In the upper-left corner of the Excel 2007 window is the Microsoft Office button. When you click the button, a menu appears. You can use the menu to create a new file, open an existing file, save a file, and perform many other tasks.

Microsoft Excel consists of worksheets. Each worksheet contains columns and rows. The columns are lettered A to Z and then continuing with AA, AB, AC and so on; the rows are numbered 1 to 1,048,576. The number of columns and rows you can have in a worksheet is limited by your computer memory and your system resources.

Creating a New Workbook

It is easy to create a new workbook! Simply, click on Office Button – New and click on Blank Workbook to create a new workbook.

Creating a New Worksheet

Creating a new worksheet is just as easy. By default, each Excel workbook contains three worksheets. Three tabs displaying Sheet 1, Sheet 2, and Sheet 3 will be displayed at the bottom of the workbook to indicate the separate sheets. To add a new worksheet, simply click on the tab after the tab that says Sheet 3.

The combination of a column coordinate and a row coordinate make up a cell address. For example, the cell located in the upper-left corner of the worksheet is cell A1, meaning column A, row 1. Cell E10 is located under column E on row 10. You enter your data into the cells on the worksheet.. The cell address is visible in the Name Box. Place your cursor in the first cell, A1. The formula bar will display the cell address in the Name Box on the left side of the Formula bar. Notice that the address changes as you move around the sheet. You can easily move from cell to cell by pressing tab or using the arrow keys.