In dynamic adiabatic inverter circuits, the homo/hetero-TFET-based PAL circuit demonstrates better improvement in terms of power and delay than CAL and SCAL. In static adiabatic inverter circuits, the homo/hetero-TFET-based GFCAL circuit shows better performance in terms of power and delay than QSERL and CEPAL. The circuit performances are evaluated in terms of their power dissipation and delay. Use a single 4bit adder with one 4 bit input (addend/subtrahend) going through an exclusive OR to complement the input for. The static adiabatic inverter circuits quasi-static energy recovery logic (QSERL), complimentary energy path recovery logic (CEPAL), glitch-free cascadable adiabatic logic (GFCAL) and dynamic adiabatic inverter circuits, clocked adiabatic logic (CAL), pass-transistor adiabatic logic (PAL), single-phase source coupled adiabatic logic (SCAL) are taken into consideration. The static and dynamic adiabatic inverter circuits are constructed and they are operated by a sinusoidal power clock signal. Using this knowledge and experience, we can move on to designing more complex integrated circuits.

Challenging to design 16 logic level circuit working with 5ns delay. Now you can take up the 1 bit ALU as block and construct a 4 bit ALU, which performs all the. The designed ALU is able to handle two 4 bit inputs to produce required output based on the output selector lines. Modern CPUs contain very powerful and complex ALUs. It represents the fundamental building block of the central processing unit (CPU) of a computer. In many designs one chooses a word size(many computers use 32 or 64 bits) and all arithmetic results are truncated to that number of bits, i.e., arithmetic is performed modulo 2word size. An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. This paper compares the performance of adiabatic inverter circuits employing homo/hetero-junction-based double-gate tunnel field-effect transistors (DG-TFETs). The Verilog arithmetic operators (+,-,) all produce full-precision results, e.g., adding two 8-bit numbers produces a 9-bit result.

4 bit arithmetic circuit