The document discusses the architecture of microcontrollers. It describes the hardware components of the PIC16F877A microcontroller, including its I/O ports, power supply connections, and reset button. It also outlines the main connections, software requirements including Proteus, Micro C Pro and a burner program, and hardware requirements such as a PC, programmer, and other electronic components needed to interface with the microcontroller.

1. Microcontrollers Architecture

2. Control System
Not ProgrammingProgramming
Microprocessor Microcontroller PLC
Relay
Logic
Gates
OP-amp

3. Relay

6. PIC 16F877A Hardware.
Main Connections.
 Software Requirements.
Hardware Requirements.

7. PIC 16F877A Hardware

8. Port A
Port E
Port C
Port B
Port D Port D
Port C
Port D

9.  IO ports of MCUs are 8 bit data registers that connect MCUs to
outside world.
 IO ports in PIC16F877A are 5 ports named " PORT A,PORTB
PORT C,PORT D,PORT E.
IO ports of MCUs are "Bidirectional" that the single port can be used
either input or output.
The register for each port is used to control port data direction flow
called TRISx ,any pin could be an input pin if its equivalent TRISx bit is
1 and output if 0.

15. VDD : Connected to DC source 5v.
Vss : Connected to the Ground
 Supply Current : 100 mA
 Output current : 25 mA

17. Power supply
Circuits

18.  It’s used As the restart button in your Computer.

21. PIC 16F877A Hardware.
Main Connections.
 Software Requirements.
Hardware Requirements.

22. Main Connections

24. 10 KΩ

28. PIC 16F877A Hardware.
Main Connections.
 Software Requirements.
Hardware Requirements.

29. Software Requirements.

30. 1. Proteus.
2. Micro c Pro.
3. Burner program.

31. PIC 16F877A Hardware.
Main Connections.
 Software Requirements.
Hardware Requirements.

32. Hardware Requirements.

33. 1. Pc.
2. Programmer..
3. Other components as
pic16f877a..breadboard..resisto
rs….capacitors…lcd...sensor…
power supply…