DIGITAL IC TESTER AND RECOGNIZER A Mini Project Report on : CHRIS MANOJ Prof. K. SUBBA RAO 07N71A0412 Head , Dept. of E.C.E. By : Under the esteemed guidance of : DRK-IST. DRK-IST.
DIGITAL IC TESTER AND RECOGNIZER
A Mini Project Report on :
CHRIS MANOJ Prof. K. SUBBA RAO07N71A0412 Head , Dept. of E.C.E.
By : Under the esteemed guidance of :
DRK-IST. DRK-IST.
Objective
• This project intends to test a, IC under consideration, is in a working condition or not.
• This makes the task of debugging the faulty circuit easier rather than checking the circuit on the whole .
INPUTS AND OUTPUTS
• INPUTSPower SupplyIC to be Tested. Keypad Entry.
• OUTPUTSLiquid Crystal Display.
HARDWARE
• Components for a regulated power supply.• Microcontroller AT89S52.• Liquid Crystal Display.• IC to be Tested (Base).• Keypad.
Components for a Regulated Power Supply
• Transformer
• Rectifier
• Filter
• Voltage Regulator
Software Used:
• Keil Compiler : Front end
• Pro-load
Design Requirements
• Input pins to take data from IC• Output pins to display data on LCD• Logic Unit and ALU -> Control Unit• Program Memory(ROM)• RAM• Timers .To have all these in one socket we go for a microcontroller
Which Microcontroller ?
• To select a Microcontroller we have to think of the following factors :
SpeedPower ConsumptionCostEfficiency So, we go for AT89S52
Features of AT89s52• 8K Bytes of Re-programmable Flash Memory. • RAM is 256 bytes.• 4.0V to 5.5V Operating Range.• Fully Static Operation: 0 Hz to 33 MHz’s• 32 Programmable I/O Lines.• Three 16-bit Timer/Counters.• Eight Interrupt Sources.• Full Duplex UART Serial Channel.• Low-power Idle and Power-down Modes.• Interrupt recovery from power down mode.• Fast programming time.• Flexible ISP programming (byte and page mode).
PIN DIAGRAM of AT89s52
LIQUID CRYSTAL DISPLAY
LCD INTERFACE WITH MICROCONTROLLER
INTERFACING THE KEYPAD TO MICROCONTROLLER
BLOCK DIAGRAM
IC that were TESTED
• 74LS00- QUAD 2-INPUT NAND GATE
• 74LS02- QUAD 2-INPUT NOR GATE
• 74LS09 QUAD -2 INPUT AND GATE
74LS00- QUAD 2-INPUT NAND GATE
74LS02- QUAD 2-INPUT NOR GATES
74LS09 QUAD -2 INPUT AND GATE
INPUT INPUT OUTPU
T
A B AB
L L L
L H L
H L L
H H H
Function Table :
SCHEMATIC DIAGRAM
DIGITAL IC TESTER AND RECOGNIZER :
CODING PART
DUMPING THE HEX FILE INTO THE MICROCONTROLLER
FUTURE SCOPE
• The project can be extended to work for more 16 pin ICs by changing some hardware and coding.
ICs that can be tested and recognized:
• 4070- Quad 2-Input Exclusive OR Gate • 7266- Quad 2-Input Exclusive NOR Gate • 4073- Triple 3-Input AND Gate • 4075- Triple 3-Input OR Gate •4082- Dual 4 input And gate • 4052- 4 X 2 Multiplexer • 4051- 8 X 1 Multiplexer • 4053- 2x1 Multiplexer • 7485- 4 bit binary comparator • 74194- 4 bit bidirectional Shift Register
THANK YOU - CHRIS MANOJ