28-02-2013, 09:57 AM
IC TESTED
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ABSTRACT
IC’s, the main component of each and every electronic circuit can be used for wide variety of purposes and
functions. But sometime due to faulty ICs the circuit doesn’t work. Indeed it is lot tedious work to debug the
circuit and confirm whether the circuiting is creating problem or the IC itself is dead. So to come up with
these sorts of problems we intend to make a project which would confirm whether the IC under consideration
is working properly or not.
INTRODUCTION
We completed our project by going through these steps,
• We made a USB to Serial Programmer ,
• We did the basic circuit on breadboard and Tried with few basic ICs on it.
• We developed the circuit which can put on PCB and can be used for all the ICs.
• To make the project user friendly, we worked to make the keypad and LCD interface.
WORKING:
The IC to be tested is inserted in the base. The user enters the IC number through keypad which is
simultaneously displayed on the LCD. The IC number is communicated to other MCU which basically test
the ICs for few sets of input which is given through the MCU and corresponding output. The result is again
communicated to the first MCU confirming it to be either correct or faulty which is displayed on the
LCD.If the IC tested is ok “IC TESTED OK is displayed on the LCD.Otherwise “IC TESTED FAILED” is
displayed.
For example if we want to check shift register(74194) the following steps has to be followed
1. IC i.e. is 74194 is inserted in the base.
2. IC number i.e. 74194 is typed using the keypad
3. Enter key is then pressed
4. if IC is ok,”IC TESTED OK” is displayed on the screen otherwise “IC TESTING FAILED” is
displayed.
We also have the reset key.If by mistake a wrong IC number is typed,it can be reseted using the reset key
and then correct IC number can be typed.