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card and the Arduino board can communicate.

Figure 4 card and the Arduino board can communicate.

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Fig. 4. Pin Diagram of PIC16f877A
Fig. 4. Pin Diagram of PIC16f877A
The differences between PIC16f877a and PIC18f4550 are shown in the below chart. But PIC16f877a can’t control the SD card module. Hence, we have to use another microcontroller PIC18f4550. Table.1. Differences between PIC16F877A and PIC18F4550 [10]
The differences between PIC16f877a and PIC18f4550 are shown in the below chart. But PIC16f877a can’t control the SD card module. Hence, we have to use another microcontroller PIC18f4550. Table.1. Differences between PIC16F877A and PIC18F4550 [10]
Fig. 8. Arduino board communication. SD card is connected to Arduino using SPI
Fig. 8. Arduino board communication. SD card is connected to Arduino using SPI
5. Construction and working of the system. International Journal of Trendy Research in Engineering and Technology Volume 6 Issue 4 August 2022 ISSN NO 2582-0958
5. Construction and working of the system. International Journal of Trendy Research in Engineering and Technology Volume 6 Issue 4 August 2022 ISSN NO 2582-0958
Fig.13. An experimental set of the attendance marking system If the tag number is not a previously saved number, the PIC microcontroller will send a message to the LCD to display SWIPE AGAIN to the person.
Fig.13. An experimental set of the attendance marking system If the tag number is not a previously saved number, the PIC microcontroller will send a message to the LCD to display SWIPE AGAIN to the person.
Related topics:
PIC microcontrollerAttandance System
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