Basically in digital system there are two type of circuit: combinational logic circuit and sequential logic circuit. When the authors talk about combinational circuit, this circuit is that circuit of ...

Abstract: Logic encryption for combinational circuits are proposed in this paper. Logic encryption is achieved by using key gate transistors in the circuit schematic of subtractors and adders. In this ...

1.1 Half Adder To show the operation of a multi-bit adder, we will start with the simplest form, which is a half-adder (Half Adder). Run and test the operation of the following circuit. Place the ...

Abstract: In very-large-scale integration systems, adders and multipliers are among the arithmetic calculation cells that are most commonly and extensively used. For microprocessors and digital signal ...

Increment and decrement. They sound like simple functions. But even the simplest functions can get quite complex in a microprocessor design. Ken Shirriff has written up a great blog post about his ...

A full adder is a combinational circuit that forms the arithmetic sum of three bits. It consists of three inputs and two outputs. The logic diagram as shown is a full adder implemented in ...

Increment and decrement. They sound like simple functions. But even the simplest functions can get quite complex in a microprocessor design. Ken Shirriff has written up a great blog post about his ...