read barcode from image c#.net Usage in Software

Printer Code 128 Code Set B in Software Usage

12.4 Usage
Code 128 Code Set A Scanner In None
Using Barcode Control SDK for Software Control to generate, create, read, scan barcode image in Software applications.
Paint Code128 In None
Using Barcode creator for Software Control to generate, create Code128 image in Software applications.
This dual-channel voltmeter can be used when there is a need to monitor two voltages simultaneously.
ANSI/AIM Code 128 Decoder In None
Using Barcode decoder for Software Control to read, scan read, scan image in Software applications.
Generating Code 128 Code Set A In Visual C#
Using Barcode maker for VS .NET Control to generate, create Code 128 Code Set B image in .NET framework applications.
12.5 Fabrication
Code-128 Creator In Visual Studio .NET
Using Barcode generation for ASP.NET Control to generate, create Code128 image in ASP.NET applications.
Creating Code 128 Code Set A In .NET
Using Barcode generation for Visual Studio .NET Control to generate, create Code 128A image in .NET applications.
AT90S2313
Paint Code 128B In Visual Basic .NET
Using Barcode generator for .NET Control to generate, create Code 128 Code Set B image in Visual Studio .NET applications.
EAN / UCC - 13 Encoder In None
Using Barcode generator for Software Control to generate, create GTIN - 13 image in Software applications.
MAX111
Print Code 39 Extended In None
Using Barcode generation for Software Control to generate, create Code 39 Extended image in Software applications.
Generating UCC - 12 In None
Using Barcode generator for Software Control to generate, create GTIN - 128 image in Software applications.
16 x 2 Line LCD
Barcode Creator In None
Using Barcode generator for Software Control to generate, create barcode image in Software applications.
Barcode Maker In None
Using Barcode maker for Software Control to generate, create barcode image in Software applications.
4 bits Channel-0 data/addr ADC Channel-1 Control
OneCode Printer In None
Using Barcode printer for Software Control to generate, create USPS Intelligent Mail image in Software applications.
Generating Barcode In None
Using Barcode generation for Microsoft Word Control to generate, create bar code image in Microsoft Word applications.
FIGURE 12.1 Block diagram for the dual-channel voltmeter with LCD.
Matrix 2D Barcode Drawer In Java
Using Barcode encoder for Java Control to generate, create Matrix Barcode image in Java applications.
Bar Code Printer In .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
DESIGN CODE 235
Decoding Bar Code In C#.NET
Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
Drawing UPC A In Visual Basic .NET
Using Barcode printer for VS .NET Control to generate, create UPC A image in Visual Studio .NET applications.
The voltmeter was fabricated on a general-purpose PCB about 2 inches a side, and the completed circuit board is illustrated in Figure 12.3.
Making UPC Code In VS .NET
Using Barcode creator for .NET Control to generate, create UPC A image in .NET framework applications.
UPC Code Creator In Java
Using Barcode generator for Android Control to generate, create UPC A image in Android applications.
12.6 Design Code
The code for this project was written in C using the SPJ systems C-AVR compiler and is available in the code directory in the file adc.c. Figure 12.4 illustrates the MAX111 ADC signals as captured on a logic analyzer.
FIGURE 12.2 Circuit schematic for a the dual-channel voltmeter with an LCD display.
DESIGN CODE 237
FIGURE 12.3 Photograph of the dual-channel voltmeter.
SCLK BUSY
CS* Dout
FIGURE 12.4 Logic analyzer screen capture of the MAX111 ADC readout by the AT90S2313 controller.
This page intentionally left blank.
AVR PROJECT 4: THE UBIQUITOUS KITCHEN TIMER
13.1 At a Glance
n this chapter we look at another simple design that uses an AT90S1200. The features of the timer are:
1. 2. 3. 4. 5. 6. 7.
A no-frills multipurpose timer Uses two 1.5-V AAA cells Simple user interface Input time settings with thumb-wheel switches Timer is armed with a single switch Shows how to use an interrupt Driver code in Assembler
Copyright 2001 The McGraw-Hill Companies, Inc. Click Here for Terms of Use.
240 AVR PROJECT 4: THE UBIQUITOUS KITCHEN TIMER
13.2 Introduction
Time is money. In the kitchen, knowing time could mean you have an unburnt, properly cooked dish (whether it tastes good is another matter). Toward that end, we have a small and useful project that will allow you to keep good time. Besides in the kitchen, you could use it elsewhere, as a siesta alarm for example. This design of an interval timer is kept very simple with no frills. Perhaps it doesn t get simpler than this design. Figure 13.1 illustrates the block diagram of the design. Thumb-wheel switches are used to enter the time in minutes (nothing cooks in seconds anyway!). Once you set the required time, just reset the timer and it starts counting. Once the set time has elapsed, the buzzer goes on.
13.3 Design Description
The design of the timer is very simple. Figure 13.2 illustrates the circuit schematic. Only a handful of components are required to build the Timer. To keep the system simple, we have used thumb-wheel switches to input the time. More fancy solutions involving a keypad and an LCD display are also possible, but that leads to a bigger circuit and one which consumes more current. The thumb-wheel switches are connected to the PORTB pins. Each thumb-wheel switch requires four pins to read. So the entire PORTB is used up. The PORTB is programmed as an input port with the pull-up resistors on. This means that external resistors are not required.
3.58 MHz Piezo Buzzer AT90S1200
RESET ThumbWheel Switch ThumbWheel Switch
FIGURE 13.1 Block diagram of the simple kitchen timer.
FABRICATION 241
FIGURE 13.2 Circuit schematic for the kitchen timer.
The LED and the buzzer are put on the PORTD pins. The LED is connected to sink the current into the PD1 pin. The buzzer is connected to the PD2 pin. The buzzer is also set up to sink current into the pin. The circuit operates at 3.58 MHz. The internal RC oscillator cannot be used instead of the external crystal, as the RC oscillator frequency is dependent on the supply voltage and would render the timer quite useless. For other applications where timing variation is not crucial, it is an attractive proposition.
13.4 Possible Alternatives
The design cannot fit on any smaller AVR processors, and amongst the 20-pin AVR processors, the AT90S1200 is the one with the least amount of on-chip resources. The AT90S1200 processor also consumes the least amount of current. For this application, one could reduce the crystal frequency further to reduce the current consumption even more.
13.5 Fabrication
The initial idea was tested on the Atmel s AVR evaluation board, and later the circuit was built on a general-purpose PCB. The circuit has been used in my kitchen for some time
242 AVR PROJECT 4
now. Figure 13.3 is the photograph of a completed circuit board. The timer board is connected to a pair of thumb-wheel switches illustrated in Figure 13.4.
13.6 Design Code
The code for this project is available in the code directory in the file kitchen.asm.
13.7 Testing
Keep an eye on all connections. In my prototype, I forgot to ground the reset capacitor and found that the circuit would reset on its own quite frequently. After much contemplation, the trouble was traced to the open reset capacitor problem.
Copyright © OnBarcode.com . All rights reserved.