Accidently I came to know more about Verilog from my friend Aswin Sagar ! He is an Electronics and Communication Engineering student from MA College, Kothamangalam. I had heard about Verilog earlier, but I thought that it is useful only for Electronics & Communication students. Anyway, I just decided to install Verilog in my Fedora 11; I did a search yum search verilog. It showed me all those packages related to verilog.

Wow !! I saw something interesting in this result : tkgate.x86_64 : An event driven digital circuit simulator

I installed it, and tried to learn more about TKGate. Now, let me write something about TKGate and an experiment which I did with it.

TkGate is a event driven digital circuit simulator with a tcl/tk-based graphical editor. TkGate supports a wide range of primitive circuit elements as well as user-defined modules for hierarchical design. The distribution comes with a number of tutorial and example circuits which can be loaded through the “Help” menu. Hence, this free software can help engineering students like me to simulate the experiments which are to be done in Digital Electronics Lab.

Here is a screenshot of TKGate simulating the working of a Half Adder. Drawing the circuit in TKGate is simple, i.e. if you want to draw an AND Gate, just click, and press a. This will give you an AND Gate.

TKGate simulating Half Adder

TKGate simulating Half Adder

This shows the condition when  Switch A is ON and Switch B is OFF. Output is shown using 2 LEDs; one for sum and other for carry. In the above instance, Sum is one and Carry is zero. I simulated all those things I did using an IC Trainer Kit in our Digital Electronics Lab.

Find more about TKGate here and Documentation here