difference serial and parallel data transmission

... reserved. // set up the serial port myPort.setSerialPortParams(BAUD, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); break; case CommPortIdentifier.PORT _PARALLEL: thePort = ... both serial (RS232/434, COM, or tty) and parallel (printer, LPT) ports. We’ll cover this in more detail later, but briefly, serial ports are used for modems and occasionally printers, and parallel ... timeout. tty = (SerialPort) port.openPort("Penman Driver", 1000); // set up the serial port tty.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); tty.setFlowcontrolMode(SerialPort.FLOWCTRL_RTSCTS_OUT| SerialPort.FLOWCTRL_RTSCTS_OUT); //...

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Ngày tải lên: 23/06/2014, 01:20

... tạo. Cú pháp: CREATE DATABASE database_snapshot_name ON ( NAME = logical_file_name, FILENAME = ‘os_file_name’ ) [ , n ] AS SNAPSHOT OF source_database_name [;] RDBMS and Data Management/ Session ... liệu này được tự động xóa bỏ từ đĩa khi cơ sở dữ liệu bị xóa.  Cú pháp: DROP DATABASE { database_name } RDBMS and Data Management/ Session 7/11 of 25 Cơ sở dữ liệu người dùng định nghĩa  Ví ... liệu hệ thống RDBMS and Data Management/ Session 7/23 of 25 Bản chụp cơ sở dữ liệu Tạo CSDL Tạo CSDLTạo bản chụpDữ liệu được sửa đổi Bản chụp được khôi phục RDBMS and Data Management/ Session...

Ngày tải lên: 01/09/2012, 09:09

... several-bit data is referred to as parallel data input/output and the peripheral functions for parallel data input/output are called "I/O ports", which have registers and pins as ... various data input and output, those of parallel data are the simplest and have a wide variety of uses. They are used for general purposes such as inputting signals from various sensors and turning ... Chapter 8 Parallel Data Input/Output Although the programs described in Chapter 6 use the memory and CPU registers only, this chapter explains how to input and output parallel data. Among...

Ngày tải lên: 29/09/2013, 11:20

Ngày tải lên: 29/09/2013, 20:20

... format. Reading XML Both the DataSet and DataTable classes include ReadXml and ReadXmlSchema counterparts to the XML-writing methods. To use them, create a new DataSet or DataTable instance; then ... following code sets the namespace and prefix for a DataTable; the process for setting these values in a DataSet or DataColumn is identical: C# DataTable customers = new DataTable("Customer"); customers.Namespace ... relevant DataTable, DataRelation, and content objects. Call the WriteXml method of the DataSet, passing it the file name as an argument. Import file-based XML into a new DataSet Create a new DataSet...

Ngày tải lên: 03/10/2013, 00:20

... curves for Base band and ASK signals SNR in db PE - For Base band . for ASK Page 2 Purpose: The objectives of this laboratory are: 1. To implement baseband, amplitude shift keying, and phase reversal ... average BER and dividing it by the data rate. Therefore PE = BER / fs; Eb = 7.27 x 10 -5 Figure 5 B (a) ASK BER measurement Page 14 Plot of PE vs SNR curves for Base Band and ASK signals ... Procedure A) Base band Transmission: The circuit is built according to the schematic shown in figure 5A. The data rate (fs) is set for 5 kHz. The Frequency counter is set to DC coupling and the auto...

Ngày tải lên: 19/10/2013, 17:15

... LAB REPORT EXPERIMENT 6 DIGITAL DATA TRANSMISSION - II SUBMITTED BY Solve the equation above and get (f 1 -f 0 )T = 0.7151. This value is confirmed ... convey digital data. Normally, FSK modulation is achieved using just two frequencies to represent binary data. For example, a frequency of 2000 Hz may represent a binary 1 (mark) and 1000 Hz ... Master Clock). In this mode, a cosine begins at the start of every data period and proceeds at the frequency fx until the end of the data period. Then the process repeats. Figure 6c The FSk...

Ngày tải lên: 23/10/2013, 15:15

... small amount of data, a visual scan after data entry may suffice as a data validation technique. However, when the amount of data is large and/ or you want to ensure that invalid data is not entered ... tutorials, and numerous timesaving and annoyance-removing macros and utilities. He plans to create a similar tool for Microsoft Excel, and, depending on resource constraints and demand, for ... Recovery And Safe Mode 30 CHAPTER 2 DATA ENTRY FORM 33 2.1 An Easier Way To Type In Data Plus A Multi-Series “Find” Utility (Data /Form) 33 2.2 Form Based Data Entry 33 2.2.a New data...

Ngày tải lên: 09/12/2013, 15:15

... understand the threats and have a chance at finding them. Let’s learn a bit more about how data can be hidden on a computer system. It makes sense for attackers or criminals to hide files and data ... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked. We were able to make a “backup” of Perl and write it to a couple floppies and restore ... copy of the original information. This meant a user might compare a clean disk and an infected disk and not find a difference. A year after Brain was created in 1987, the most common virus in...

Ngày tải lên: 10/12/2013, 14:16

... to Back Up and Restore Data Backup Backup Backup Data Data Data Data Data Corruption Data Corruption Data Corruption Restore Restore Restore Data Data The efficient recovery of lost data is ... Backing Up and Restoring Data 1 Overview ! Introduction to Backing Up and Restoring Data ! Preparing to Back Up Data ! Backing Up Data ! Restoring Data ! Best Practices Backing up data is ... Module 10: Backing Up and Restoring Data Introduction to Backing Up and Restoring Data ! The Goal of Backing Up Data Is to Restore That Data If It Is Lost ! Permissions and User Rights Are...

Ngày tải lên: 10/12/2013, 16:15

... 4: Grouping and Summarizing Data 5 Function Data type COUNT COUNT is the only aggregate function that can be used on columns with text, ntext, or image data types. MIN and MAX You cannot ... image data types. MIN and MAX You cannot use the MIN and MAX functions on columns with bit data types. SUM and AVG You can use only the SUM and AVG aggregate functions on columns with int, smallint, ... numeric, float, real, money, and smallmoney data types. When you use the SUM or AVG function, SQL Server treats the smallint or tinyint data types as an int data type value in your result...

Ngày tải lên: 11/12/2013, 14:15

... family will read and understand, and you slow down and get them right. First, for the technical folks. Mike Loukides and Kyle Hart manage to get me to write these books, and write them fast, ... APIs and simple to use. Data binding takes the complexity of reading and writing XML data out of APIs that should be focused on business rather than data tasks. 2.3 Constraint-Modeled Data ... source data binding API, and this chapter details its ins and outs. You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll...

Ngày tải lên: 12/12/2013, 11:15

... and intercepts. Even though you may fail to reject the hypotheses that represent restrictions that you impose, the hypotheses may not be perfectly true, and that may affect the estimators and ... on notes by M. D. Westbrook, and the EViews manual.] Eshragh Motahar 7 Fulbright Economics Teaching Program First Semester 2002 Analytical Methods EViews and Panel Data EViews POOL objects operate ... readable. Example: Suppose we want to work with a panel data set on the USA, Canada, and Mexico. The variables that we want to use are GDP, Population, and Trade Flows. Variable Name First Part: GDP POP TRA Variable...

Ngày tải lên: 20/12/2013, 18:15

... understand the threats and have a chance at finding them. Let’s learn a bit more about how data can be hidden on a computer system. It makes sense for attackers or criminals to hide files and data ... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked. We were able to make a “backup” of Perl and write it to a couple floppies and restore ... with A bit need to be saved! C:\>attrib SCANDISK.LOG C:\SCANDISK.LOG A AUTOEXEC.BAT C:\AUTOEXEC.BAT A CONFIG.SYS C:\CONFIG.SYS A COMMAND.COM C:\COMMAND.COM MYFILE.TXT C:\MYFILE.TXT SHR IO.SYS...

Ngày tải lên: 21/12/2013, 05:16