Question

What might be the purpose of using a full adder (rather than a half adder) for the first "column" in a parallel adder circuit?

Answer #1

Design Half-adder and Full-adder circuits using truth tables.
Use only 2-input NAND gates

Design a circuit that computes F = 4.5A (4.5 times A) using a
full adder. Input A is a 4-bit number (A3A2A1A0) and A is an even
number. A3 is the MSB.

Design a Single cell 1 bit Carry propagate (or Ripple Carry
Adder) full adder.
a. Generate the truth table
b. Using K-map or Boolean algebra, determine the logical
expression for Carry out (C-out) and Sum (S) Outputs
C. Draw the circuit diagram of the outputs in step b

Q1)Design a 3-bit full adder by using a 8x3 Decoder.,
Q2)Design a digital circuit by using a 8x1 multiplexer
implementing the following Boolean equation.F(A, B, C, D) =∑(2, 3,
5, 7, 8, 9, 12, 13, 14, 15)

) What is the relationship between the full adder and full
subtractor circuits?

Adder
Start out by picking 2 positive six bit binary numbers that are
less than 3210, written in 2's complement notation. The
eventual goal is to add these two numbers.
1) Look at the LSB bit of the numbers, and using logic gates
(NANDs, NORs, etc.) design a circuit that correctly gives the right
output for any possible combination of bits in the LSB place.
2) Now look at the next column to the left (next to LSB). In
this...

Design a 4-bit adder-subtractor circuit using the 4-bit binary
Full adders (74LS83) and any necessary additional logic gates. The
circuit has a mode input bit, M, that controls its operation.
Specifically, when M=0, the circuit becomes a 4-bit adder, and when
M=1, the circuit becomes a 4-bit subtractor that performs the
operation A plus the 2’s complement of B.Where A and B are two
4-bits binary numbers. That is,
* When M=0, we perform A+B, and we assume that
both...

Design a 1-bit Full adder using one 3-bit majority encoder and a
set of NAND gates

VIVA QUESTIONS: 1. Implement the following function using VHDL
coding. (Try to minimize if you can). F(A,B,C,D)=(A'+B+C).
(A+B'+D'). (B+C'+D') . (A+B+C+D) 2. What will be the no. of rows in
the truth table of N variables? 3. What are the advantages of VHDL?
4. Design Ex-OR gate using behavioral model? 5. Implement the
following function using VHDL code f=AB+CD. 6. What are the
differences between half adder and full adder? 7. What are the
advantages of minimizing the logical expressions?...

Explain why an investor might take an illiquid position in a
forward contract rather than using an exchange-traded futures
contract. (2 pts.)

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