my first project on PCB designing , 8051 development board with all detail explanation and layout of different parts of circuits in development board

1. 8051 DEVELOPMENT BOARD
GROUP MEMBERS :
1) NEELI TIRUMALESH ARVIND(ESD14I008)
2) CHARASALA CHARAN THEJA (ESD14I002)
3) V.SHIVA PRASAD(EVD14I014)
4) B.SAIMAHEEDHAR (ESD14I001)
5) PAWARSUNIL KUMAR(ESD14I009)
FINAL PCB DESIGN LAYOUT
INCLUDES
*8051 MICRO-CONTROLLER
*4X4 KEYPAD SWITCH
* 8 LED'S ARRAY
*RS232 PORT SECTION
*STEPPER MOTOR DRIVER SECTION
*ANALOG TO DIGITAL CONVERTER
(ADC) SECTION
* LCD DISPLAY SECTION
*SEVEN SEGMENT DISPLAY SECTION

2. 8051 DEVELOPMENT BOARD
A) 4X4 KEYPAD SWITCH CIRCUIT B) STEPPER MOTOR DRIVER CIRCUIT
NOTE : I AMUSING "4 PIN PUSH BUTTON" NOTE : 8TH PIN FROMIC IS CONNECTED
TO GROUND
C) RS232 PORT SECTION
NOTE :
* 11TH PIN FROMIC IS CONNECTEDTO "P3.1 TX"
*12TH PIN FROMIC IS CONNECTEDTO "P3.0 RXD"
* 5TH AND15TH PIN FROMIC ISCONNECTED TO
GROUND
* 16TH PIN FROMIC IS CONNECTEDTO "VCC"
D) ANALOG TO DIGITAL CONVERTER (ADC)
NOTE :
* 10TH IN FROMIC IS CONNECTEDTO "GROUND"
* 20TH PIN FROMIC IS CONNECTEDTO "VCC"

3. 8051 DEVELOPMENT BOARD
E) 8051 MICRO-CONTROLLER SECTION
NOTE :
* 40TH PIN FROM IC ISCONNECTED TO " VCC"
* 20TH PIN FROMIC IS CONNECTEDTO "GROUND"
*ABOVE 6 PIN CONNECTORIS FOR " 8051 ISP PROGRAMMABLE PORT" LOCATED AT TOP RIGHT
CORNEROF PHOTO
INCLUDE'S
1ST PIN --> GROUND
2ND PIN --> VCC
3RD PIN --> MOSI
4TH PIN --> MISO
5TH PIN --> SCK
6TH PIN --> RESET
F) 8 LED'S ARRAY
NOTE : ALL THE NEGATIVETERMINAL OF THE DIODE ARE SHORTED ANDCONNECTEDTO GROUND

4. 8051 DEVELOPMENT BOARD
G) SEVENSEGMENT DISPLAY
H) LCD DISPLAY CIRCUIT
NOTE :
*4 PIN CONNECTORIN SEVEN SEGMENT DISPLAYIS FOR
ENABLINGTHE DISPLAY
* 8 PIN CONNECTORIS TO GIVE THE DATA INPUT'S TO THE SEVEN
SEGMENT DISPLAYCIRCUIT
*16TH & 1ST PIN IS CONNECTED TO "GROUND"
*15TH & 2ND PIN IS CONNECTEDTO "VCC"
* POWERSUPPLY IS GIVENTO THE BOARD THROUGH 5V POWER
JACK ADAPTER