In this lesson will be learn how to display data ADC on 8 x 7 segmen, for a simple task, we assume ADC have input ranges 0 – 5 volt, and then will display data as desimal that must be 3 digit 0 – 255, and each digit would be placed on 3rd, 2nd and 1st 7 segmen.
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Spreadsheet / PDF / PowerPoint. Getting Started with CSV; Getting Started with Excel; Getting Started with PDF Reading; Getting Started with the PowerPoint Writer; Preparing Data in FME for Tableau; GIS and Business Intelligence Data Wrangling; Vector / GIS. How Do I Do That in FME; Common GIS Operations; Working with Topology and Network. Dec 13, 2012 Simple digital thermometer using 8051 microcontroller. AT89S51 is the microcontroller used here. LM35 is the temperature sensor and ADC0804 is the analogue to digital converter.
Figure 2.5.2. Connecting ADC and display to 7 segmen
Step 1st
Build the circuit as shown in figure 2.5.2. As you seen on figure 2.5.2. P3.0 trough P3.7 is connected to DB0 – DB7 ADC0804, and P2.0- P2.7. is connected to transistor driver, and P3.0 trough P3.7. is connected to 7 Segmen. Remember, that all we want to do with this lesson is write data ADC, to 8 x 7 Segmen.
Step 2nd
In this step, you must tipe the assembly program to make your 8 x 7 Segmen shown the data, we assume that you have already known the editor, we used MIDE-51 to edit the program. ( Download File asm : exp252.zip, Download Complete Circuit File : ADC.pdf
Step 3rd
Safe your assembly program above, and name it with adc2.asm (for example) Compile the program that you have been save by using MIDE-51, see the software instruction.
Step 4th
Download your hex file into the microcontroller by using Microcontroller ATMEL ISP software, see the instruction.After download this hex file you’ll see the action of ADC ( of course if your cable connection and your program are corrected ) Edit PDF
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