Question 1

What is a CMOS circuit simulator?

Accepted Answer

A CMOS circuit simulator converts Boolean expressions into visual logic circuit diagrams using CMOS (Complementary Metal-Oxide-Semiconductor) technology. It is widely used by EEE and digital electronics students to visualize combinational logic circuits without needing physical hardware or expensive software.

Question 2

How do I convert a Boolean expression to a logic circuit diagram?

Accepted Answer

Enter your Boolean expression (e.g. A AND B OR NOT C, or SOP/POS forms) into Logic Gate Simulator and click Generate. The tool instantly draws the full logic circuit diagram and generates the complete truth table — useful for digital electronics assignments and EEE coursework.

Question 3

Can I use this for EEE coursework and digital electronics assignments?

Accepted Answer

Yes. This tool is designed for EEE students studying digital logic design, Boolean algebra, and CMOS circuits. It helps you verify Boolean expressions, draw logic gate diagrams, and check truth tables for combinational circuits — all common tasks in digital electronics courses.

Question 4

Is this logic gate simulator free to use?

Accepted Answer

Yes, completely free. No account, no login, no download required. Works entirely in your browser — ideal for students who need a quick tool during revision or lab sessions.

Question 5

What logic gates are supported?

Accepted Answer

AND, OR, NOT, NAND, NOR, XOR, and XNOR gates are all supported. You can combine them with parentheses to build complex combinational circuits — including sum-of-products (SOP) and product-of-sums (POS) expressions commonly used in digital logic design.

Question 6

What is the difference between NAND and NOR gates in CMOS design?

Accepted Answer

In CMOS design, NAND gates use series NMOS and parallel PMOS transistors, while NOR gates use parallel NMOS and series PMOS. NAND gates are preferred in CMOS because series NMOS transistors are faster than series PMOS, making NAND implementations more efficient. This simulator lets you visualise both instantly.

Free Logic Gate Simulator — Boolean Expression to CMOS Circuit & Truth Table