chapter 3  data types and file formats

... in this section: Analog and Digital Data Analog and Digital Signals Periodic and Nonperiodic Signals 3.3 Note Data can be analog or digital Analog data are continuous and take continuous values ... Solution The lowest frequency must be at 40 kHz and the highest at 240 kHz Figure 3.15 shows the frequency domain and the bandwidth 3.44 Figure 3.15 The bandwidth for Example 3.12 3.45 Example 3.13 ... tone 3.36 Figure 3.11 The time and frequency domains of a nonperiodic signal 3.37 Note The bandwidth of a composite signal is the difference between the highest and the lowest frequencies contained...

Ngày tải lên: 29/03/2014, 11:20

... fundamental data types supported by JavaScript Date and time values are not one of these fundamental types, but JavaScript does provide a class of object that represents dates and times and can be ... as true and false, it is sometimes convenient to think of them as on (true) and off (false) or yes (true) and no (false) Sometimes it is even useful to consider them equivalent to (true) and (false) ... arrays, and objects, and it means that functions can be passed as arguments to other functions This can quite often be useful We'll learn more about defining and invoking functions, and also...

Ngày tải lên: 05/10/2013, 12:20

... appears You can have some script execute when you show and/ or hide the pop up by using the onpopupshowing and onpopuphiding methods, as when you show and hide items in a dynamic menu The second step ... items like menus and buttons 3.4 Tabular and Hierarchical Information Many options exist to display hierarchical information in your user interface The most common are tree-like and table-like ... boxes, trees, and grids With the exception of the tree, these elements are not limited in regard to the content they can contain Currently, the tree only holds text and image content and grids are...

Ngày tải lên: 17/10/2013, 19:15

... distributed random numbers with mean and variance 1: xn ˆ 2*sqrt(3)*(rand À 0:5); For two random variables x and y, we have E‰x ‡ yŠ ˆ E‰xŠ ‡ E‰yŠ, …3:3:15† i.e., the mean value of the sum of random ... output files, we have to set the CCS output file in integer format We can load the output file out12.dat and listen to it using the following MATLAB commands: load out12.dat; % Read data file soundsc(out12, ... results between (a) and (b) (d) A ˆ 1, f ˆ 600 Hz, and fs ˆ kHz (e) Compare and explain the results (b) and (d) 14 Generate 1024 samples of pseudo-random numbers with mean and variance using the...

Ngày tải lên: 19/10/2013, 23:15

... oncommand="chooseType(this);"/> group="flyTypes" ... ... the native web formats of JPEG, PNG, and GIF Most images you will find in the Mozilla UI are GIF files, which retain the best quality when compressed Chapter discusses theme issues and considerations...

Ngày tải lên: 20/10/2013, 09:15

... ... has a command set that has its own commands and that pulls in a second set defined elsewhere (moreEditItems)

Ngày tải lên: 20/10/2013, 09:15

... splitter changes when a user handles the and collapses the splitter, for example, and then quits the persist attribute preserves the splitter state and its visibility for the next ... and These two elements create space between widgets in a box and can be horizontal or vertical depending on the orientation of the box The separator is a visible divider and the ... flicker and UI wobbles when content is being shown and hidden intermittently 3.9.3.2 Overflow A value of scroll or auto for the CSS overflow property ensures that a scrollbar appears and that...

Ngày tải lên: 24/10/2013, 08:15

... overlay, use the same id of an element in the "base file" for a similar element in your overlay content, and the overlay will replace the base file at runtime (or be merged with it, as described ... id="save-button" label="Save" observes="cmd_save"/> Overlay files are XUL files with a xul extension The content within that file has to be contained in an element, which is the ... Print, and Open Notes [1] Chapter has more information on RDF datasources To delve deeper into the chrome layout and install issues, see Chapter 3.12 The Extras Certain lesser-known elements and...

Ngày tải lên: 24/10/2013, 08:15

... sophisticated types, such as classes, structures, and enumerations, but these too are ultimately composed of the built-in types At the core of the C++ type system are the seven basic data types shown ... combinations of the basic types and the type modifiers The table also shows the guaranteed minimum range for each type as specified by the ANSI/ISO C++ standard It is important to understand that minimum ... compiler specifies the range of the basic types in the header C++ A Beginner’s Guide by Herbert Schildt Floating-Point Types Variables of the types float and double are employed either when...

Ngày tải lên: 27/10/2013, 08:15

... sophisticated types, such as classes, structures, and enumerations, but these too are ultimately composed of the built-in types At the core of the C++ type system are the seven basic data types shown ... combinations of the basic types and the type modifiers The table also shows the guaranteed minimum range for each type as specified by the ANSI/ISO C++ standard It is important to understand that minimum ... compiler specifies the range of the basic types in the header C++ A Beginner’s Guide by Herbert Schildt Floating-Point Types Variables of the types float and double are employed either when...

Ngày tải lên: 22/01/2014, 10:20

... variables in one file and use extern declarations in the others, as shown in Figure 7-1 File One declares x, y, and ch In File Two, the global variable list is copied from File One, and the extern ... of two or more files, each file must know the names and types of the global variables used by the program However, you cannot simply declare copies of the global variables in each file The reason ... be recompiled Instead, you can simply recompile the file that changed, and link the existing object code for the other files The multiple file approach can yield a substantial time savings with...

Ngày tải lên: 24/01/2014, 20:20

... createElement, and createTextNode for DOM querying and manipulation of the actual document Further details about the DOM are available in Chapter Other types of document objects include the width and height ... buttons and buttonpack, there are special event handlers on the dialog element -ondialogaccept, ondialogcancel, and ondialoghelp that correspond to the buttons typically displayed and can execute ... Mozilla toolbar implements a toolbargrippy and a box that contains children The toolbargrippy is a bar on the lefthand side used for collapsing and expanding the bar This useful method allows users...

Ngày tải lên: 26/01/2014, 07:20

... variables in one file and use extern declarations in the others, as shown in Figure 7-1 File One declares x, y, and ch In File Two, the global variable list is copied from File One, and the extern ... of two or more files, each file must know the names and types of the global variables used by the program However, you cannot simply declare copies of the global variables in each file The reason ... be recompiled Instead, you can simply recompile the file that changed, and link the existing object code for the other files The multiple file approach can yield a substantial time savings with...

Ngày tải lên: 27/01/2014, 02:20

... Frequency Domain Spectrum & Bandwidth Spectrum range of frequencies contained in signal Absolute bandwidth width of spectrum Effective bandwidth Often just bandwidth Narrow band of frequencies containing ... space Speech bandwidth 100Hz to 7kHz Telephone bandwidth 300Hz to 3400Hz Video bandwidth 4MHz Digital Use two DC components Data and Signals Usually use digital signals for digital data and analog ... Signal with DC Component Data Rate and Bandwidth Any transmission system has a limited band of frequencies This limits the data rate that can be carried Analog and Digital Data Transmission Data...

Ngày tải lên: 16/02/2014, 08:20

... Systems and File Management 19 Handheld Operating Systems Chapter 4: Operating Systems and File Management 20 SECTION File Basics C File Names and Extensions File Directories and Folders File Formats ... application can open files that exist in its native file format, plus several additional file formats Chapter 4: Operating Systems and File Management 26 File Formats An easy way to convert a file from ... data files and program files Chapter 4: Operating Systems and File Management 35 File Management Tips Don’t store files in the root directory Access files from the hard disk Accessing files...

Ngày tải lên: 06/03/2014, 09:21

... variables in one file and use extern declarations in the others, as shown in Figure 7-1 File One declares x, y, and ch In File Two, the global variable list is copied from File One, and the extern ... of two or more files, each file must know the names and types of the global variables used by the program However, you cannot simply declare copies of the global variables in each file The reason ... be recompiled Instead, you can simply recompile the file that changed, and link the existing object code for the other files The multiple file approach can yield a substantial time savings with...

Ngày tải lên: 06/03/2014, 22:20

... String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types wrapper classes graphical components and containers labels and images ...     object creation and object references the String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types wrapper classes © ... methods that generate pseudorandom numbers • A Random object performs complicated calculations based on a seed value to produce a stream of seemingly random values • See RandomNumbers.java (page 126)...

Ngày tải lên: 15/03/2014, 11:20

... transmitted during given time period • Bandwidth: difference between highest and lowest frequencies that a medium can transmit 10 Baseband and Broadband • Baseband: digital signals sent through direct ... attenuation and crosstalk – CAT (Category 7): signal rates up to GHz 23 Comparing STP and UTP • Throughput: STP and UTP can both transmit data at 10, 100, and 1000 Mbps – Depending on grade of cabling and ... Layer Standards Table 3-2: Physical layer networking standards 31 Summary of Physical Layer Standards (continued) Table 3-2 (continued): Physical layer networking standards 32 Cable Design and Management...

Ngày tải lên: 30/03/2014, 07:20