Which gate produces output 0 when input is 1101?

Which gate produces output 0 when input is 1101?

The NOR Gate Still, the same logical principle applies: the output goes “low” (0) if any of the inputs are made “high” (1).

How many bits is an ALU?

The ALU has two 32-bit inputs (which we’ll call “A” and “B”) and produces one 32-bit output. We’ll start by designing each piece of the ALU as a separate circuit, each producing its own 32-bit output. Then we’ll combine these outputs into a single ALU result.

What conditions have to be true for the output of an AND gate to be 1?

In other words, for the output to be 1, at least input one OR two must be 1. The XOR ( exclusive-OR ) gate acts in the same way as the logical “either/or.” The output is “true” if either, but not both, of the inputs are “true.”

What is a 2 bit ALU?

2-BIT ALU  An arithmetic logic unit is a multi-operation, combinational logic function. It can perform a set of basic arithmetic operations and set of logic operations. The Alu has a number of selection line to select a particular operation in the unit.

Which gate produces a 1 if all its inputs are 0 and a 0 otherwise?

circuits. A full adder takes the carry-in value into account. Produces a 1 only if all its inputs are 1 and a 0 otherwise.

Which logic gate gives output 1 only if both the inputs are 1?

Combinational circuits are built of five basic logic gates: AND gate – output is 1 if BOTH inputs are 1. OR gate – output is 1 if AT LEAST one input is 1. XOR gate – output is 1 if ONLY one input is 1.

How does the ALU calculate overflow?

The logic is follows: when adding, if the sign of the two inputs is the same, but the result sign is different, then we have an overflow. We have to do this only for addition, so we take the B31 value after the XOR gate, i.e. just as it goes into the most-significant adder.

How does ALU detect overflow?

Arithmetic operations have a potential to run into a condition known as overflow. When two signed 2’s complement numbers are added, overflow is detected if: both operands are positive and the result is negative, or. both operands are negative and the result is positive.

What is the truth table of XNOR gate?

The output of an XNOR gate is true when all of its inputs are true or when all of its inputs are false. If some of its inputs are true and others are false, then the output of the XNOR gate is false. The truth table for an XNOR gate with two inputs appears to the right.

What is an arithmetic logic unit (ALU)?

An arithmetic logic unit (ALU) represents the fundamental building block of the central processing unit of a computer. An ALU is a digital circuit used to perform arithmetic and logic operations. What Is an ALU?

What is the input voltage of a logic gate?

All logic gates require some kind of input value so that they have numbers to compare. These figures come in the form of voltages. When your input voltage is 0V, then it’s considered to be low, or 0. And when you have a voltage of 5V as an input, then this is deemed to be high, or 1.

What is alu in computer architecture?

An arithmetic logic unit (ALU) is a digital circuit used to perform arithmetic and logic operations. It represents the fundamental building block of the central processing unit (CPU) of a computer. Modern CPUs contain very powerful and complex ALUs.

What is an example of an ALU?

How an ALU Works. An ALU performs basic arithmetic and logic operations. Examples of arithmetic operations are addition, subtraction, multiplication, and division. Examples of logic operations are comparisons of values such as NOT, AND, and OR.