Most of the engineering students who study digital logic design use digital logic IC’s in the lab as well as outside the lab in their projects and other applications.
Sometimes while soldering these IC’s on the board, you may not get the proper output which would make you think whether it’s working properly or not. In such a case, it would be very impractical to sit down and check each IC with the help of LED and power supply.
The question is how will you do it in an effective way?
The answer to this question is simple, you don’t have to. Leave this work to microcontroller and a couple lines of code.
This is a project based on arm7 microcontroller, which tests the 74xx series IC. The coding includes testing of 7400, 7402, 7404, 7408, 7432, 7486 IC. It can be extended further based on the need.
This includes an extra board with IC holder which holds the IC’s that are to be tested. It also includes some push button which tells the system which IC is being tested. For this, you just have to put in the IC and press the relative button to test it.
This is very useful for testing the digital logic IC’s as there are multiple gates in each one of them and those are to be tested one at a time. In some cases we can have up to six gates, while in other cases we may have IC which takes up to 3 input. It saves time and human effort for testing the IC giving out the result instantaneously.
This includes an arm7 microcontroller (LPC2148), boards for the placement of test IC, and an LCD which displays the result.
The IC is placed in holder and the switch is pressed. Then a set of input is given to its input pin and it observes the output pins.
the output pins.