Choose the best answer below that describes the flag bits of

Choose the best answer below that describes the flag bits of a 4-bit adder: The overflow and carry-out bit of a full adder will output the same value all the time. The overflow flag bit is only valid when performing unsigned calculations. The negative flag bit is only valid when performing signed calculations. The overflow flag bit is only valid when performing signed calculations. Both b and c Both c and d All of the above None of the above What is an ALU? A software language similar to VHDL A component that can perform any of various arithmetic and logic operations based on control inputs. A type of logic gate Control input that determines whether to add or subtract. None of the above What does the circuit to the right represent? SR latch Flip flop D latch MUX Decoder

Solution

9) flag bits are used for performing the operations such as indications and etc.in 4 bit adder over flow valid when number is unsigned and negative flow is valid when signed values. Answer : option \" e \"

10)ALU nothing but a Arithmetic Logic Unit , it performs the operations of Arithmetic and logic calculations.

answer : option \" b \"

11)here negative value of input is connected to another input i. e only two combinations will valid. and the out put is equally transfered as input.

answer : option \" c \"