Write the equations for carry-out bits for a 4-bit carry
lookahead adder. Draw its diagram and...
Write the equations for carry-out bits for a 4-bit carry
lookahead adder. Draw its diagram and label all the inputs and the
outputs. Compare the delays of the 4-bit ripple-carry and 4-bit
carry lookahead adders.
Q. Compare and contrast Ripple-Carry Adder and Carry-Look ahead
Adder
1) In a 4-bit ripple-carry adder as shown in Figure 5.2, assume
that each full-adder is implemented using the design as shown in
Figure 3.11 (a) and each single logic gate (e.g., AND, OR, XOR,
etc.) has a propagation delay of 10 ns. What is the earliest time
this 4-bit ripple-carry adder can be sure of having a valid
summation output? Explain how you reached your answer and how you...
a.Draw the block diagram of a 4-bit ripple carry adder using
full adders. Use the black box of the full adder in question 1.
b.Draw the block diagram of a 4-bit adder/subtractor circuit.
The circuit should have an input (add/sub) that determines the
operation (0: add, 1: subtract)
Design and Test an 8-bit Adder using 4-bit adder. Use
4-bit adder coded in class using full adder that is coded
using data flow model. Use test bench
to test 8-bit adder and consider at least five different test
vectors to test it.
Design and Test an 8-bit Adder using 4-bit adder. Use
4-bit adder coded in class using full adder that is coded
using data flow model. Use test bench
to test 8-bit adder and consider at least five different test
vectors to test it.
in behavioral not endmodule
plz help me
Problem 3.73 (1-bit full adder using carry lookahead – gate
level circuit)
3.73 Design a 4-bit full adder using carry
look-ahead rather than ripple carry.