Master Digital Logic
One Circuit at a Time

AND, OR, NOT, XOR — learn the fundamental building blocks of all digital logic.

NAND and NOR gates that can implement any logic function on their own.

Add two single bits and produce Sum and Carry outputs.

Extends the half adder to include a carry-in for multi-bit addition.

Binary-Coded Decimal adder that handles decimal digit addition.

Subtract two bits and generate Difference and Borrow outputs.

Handles borrow-in for chained multi-bit subtraction operations.

Convert binary numbers to Gray code for error-resistant communication.

Reverse the Gray code conversion back to standard binary.

Select one of four data inputs to route to a single output line.

Route a single input to one of four outputs using select lines.

Compare two 2-bit numbers and output A>B, A=B, A<B signals.

Decode a 3-bit binary input into one of eight output lines.

Encode the highest-priority active input into a 3-bit binary code.

The simplest bistable element with Set and Reset inputs.

Data flip-flop that captures input on each clock edge.

Versatile flip-flop eliminating the invalid state of SR design.

Cascaded master-slave configuration preventing race conditions.