FULL ADDER & FULL SUBTRACTOR.pptx

FULL ADDER & FULL SUBTRACTOR using universal gates and circuitverse simulator

1. FULL ADDER & FULL SUBTRACTOR using universal gates and circuitverse simulator

2. FULL ADDER: A full adder logic circuit has three inputs A, B and C, which add the three input numbers and generate a carry and sum. The difference between a half-adder and a full-adder is that the full-adder has three inputs and two outputs, whereas half adder has only two inputs and two outputs.

3. Truth TABLE & CIRCUIT DIAGRAM

4. Full adder using universal gates Circuit diagram

5. K-map

6. APPLICATION ALU- Arithmetic Logic Unit (one of the circuit is a full adder). Ripple carry adder, it adds n-bits at a time. carryout Multiplication -the dedicated multiplication circuit uses it. For graphics related applications, where there is a very much need of complex computations

7. FULL SUBTRACTOR The full subtractor is a combinational circuit which is used to perform subtraction of three input bits: the minuend , subtrahend , and borrow in . The full subtractor generates two output bits: the difference and borrow out .

8. Truth TABLE & CIRCUIT DIAGRAM

9. Full subtractor using universal gates Circuit diagram

10. K-map

11. APPLICATION These are generally employed for ALU in computers to subtract as CPU and GPU for applications of graphics to decrease the circuit difficulty Subtractors are mostly used for performing arithmetical functions like subtraction in electronic calculators and digital devices These are also applicable for different microcontrollers for arithmetic subtraction, timers and program counter (PC) Subtractors are used in processors to compute tables, address, etc.