Книга: Advanced PIC Microcontroller Projects in C

Project Hardware

Project Hardware

The block diagram of this project is shown in Figure 6.31. The circuit diagram is given in Figure 6.32. The segments of the display are connected to PORTC of a PIC18F452-type microcontroller, operated with a 4MHz resonator. Current limiting resistors are used on each segment of the display. Each digit is enabled using a BC108-type transistor switch connected to port pins RB0 and RB1 of the microcontroller. A segment is turned on when a logic 1 is applied to the base of the corresponding segment transistor.

Figure 6.31: Block diagram of the project

Figure 6.32: Circuit diagram of the project

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