MICROPROCESSOR INTRODUCTIONArkhom JODTANGCivil Aviation Training Center

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Computer System

CPUHard drive

(Program)

Memory (RAM) Port

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Computer System

Image from http://www.computer-laptop-tuning.de/preise-leistungen/

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MicroprocessorContents Microprocessor is a

digital electronic device use for process the mathematics calculation, Logic Operation, Store. Microprocessor is manufacture in the form of Integrated circuit (IC) chip.

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Microcontroller MCS51

Image from http://www.mikroe.com/chapters/view/65/

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Microcontroller MCS51

Image from http://www.mikroe.com/chapters/view/65/

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Microcomputer System and Microcontroller comparison

Microcomputer System MicrocontrollerProcessor ALUMemory (RAM) Memory (Internal RAM)Operating system (Hard drive) Program memory (Flash ROM)Peripheral Devices Port

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For subject Microprocessor and Application

Required knowledge

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Number SystemDecimal Binary Hexadecimal0 0000 0000 01 0000 0001 12 0000 0010 23 34 45 56 67 78 89 0000 1001 910 0000 1010 A11 0000 1011 B12 0000 1100 C13 0000 1101 D14 0000 1110 E15 0000 1111 F16 0001 0000 10

Microprocessor

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Hexadecimal Binary: :

0 E 0 0 0 0 1 1 1 00 F 0 0 0 0 1 1 1 11 0 0 0 0 1 0 0 0 01 1 0 0 0 1 0 0 0 1

: :

Hexadecimal Binary Decimal0 0 0 0 0 0 0 0 0 01 0 0 0 0 0 0 0 1 12 0 0 0 0 0 0 1 0 2: : :: : :

7 D 0 1 1 1 1 1 0 1 1257 E 0 1 1 1 1 1 1 0 1267 F 0 1 1 1 1 1 1 1 1278 0 1 0 0 0 0 0 0 0 1288 1 1 0 0 0 0 0 0 1 129

: : :: : :

F E 1 1 1 1 1 1 1 0 254F F 1 1 1 1 1 1 1 1 255

Hexadecimal Binary: :

1 8 0 0 0 1 1 0 0 01 9 0 0 0 1 1 0 0 11 A 0 0 0 1 1 0 1 01 B 0 0 0 1 1 0 1 1

: : 8 Bits = 1 Byte

May 2, 2023

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Digital Quantity Bit (1 bit) Nibble (4 bits) Byte (8 bits)

Word size 8 bits ( MCS-51) 32 bits ( X86 ) 64 bits ( X64 )

Word Size MCS-51 is 8-bits word size computer

1 1 0 1 0 0 1 1

D 3

Binary

Hexadecimal

8 Bits = 1 Byte

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Additional

5 01008 100

12 +

Decimal

7 75

+ 998

+ 10011101

1100

+ +

0101

Binary

1

Additional digit1

Additional digit1

1 1

14

Additional

C9+ +

5

Binary

1

0100 4

10011101

9+ +

D

Binary Hexadecimal110

0100101011

Hexadecimal

Additional digit (bit)x

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Subtraction

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Multiplication

3 0 E8 F F2 x

Decimal

6 76

x 991

x 0 97 E

F Fx x

0 1

Hexadecimal

F E

Additional Byte X X

5 8

Additional Number

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Division

18 Subject perspective view

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MCS-51 Family Microcontroller Operation Concept Digital System (Every thing is NUMBER) Cell Memory concept Read Program from Program Memory Operate Use Data Memory as tools for operation

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Program memory and Data memory

Central Processing Unit

(CPU)

Address bus

Data bus

Address bus

Data bus

Program Memory (ROM) Data Memory(RAM)

Computer System

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Single chip computer system

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Sample Circuit

http://www.botskool.com/tutorials/electronics/8051/input-output-instructions-8051-assembly-language

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Sample Circuit With some device

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Sample MCS-51 Application

May 2, 2023MCS51 Instruction

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Developing

Save / Load

Build

Assembly file (.asm)

Hex file

Emulator

Circuit Simulator

Microcontroller Board

Assembly Editor

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Assembly InstructionContain 2 parts Mnemonics'

MOV ADD MUL INC XCH …

Operands ACC, B, #5DH R0 (00h), R1 (01h), … R7, 34h, FFh P1, PSW, T1, IE

MOV A, R0MOV P1,#0FH

ADD A,#2DJB P3.1, Label1

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Basic Assembly Instruction Copy value for some memory cell

MOV A, #54H MOV A, P2 MOV P3.1, C

Increase / Decrease INC R1 DEC Acc

Exchange value between two cells XCH A, R2

Program Control (Jumping) JMP LabelName

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Applications Display to LED

Single LED 7-segments Matrix LED Display

Drive small load Driving Relay Servomotor Stepper motor LCD Display Communication with other digital devices

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MCS-51 System board

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Subject Measurement

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Instructor A. Arkhom JODTANG Office: Building 10 2nd floor Contact: Facebook

Arkhom JODTANG Group: A.Arkhom+ATAE3 Group: A.Arkhom+ATAI3