Table of Contents
- 1 How many operations are supported by the ALU?
- 2 Does the ALU carry out calculations?
- 3 What operations does an ALU perform?
- 4 How many operation selection lines are required for ALU which performs 32 operations?
- 5 How does a CPU do calculations?
- 6 What are the difference between arithmetic and logical operation?
- 7 Which circuit can perform the increment operation of an ALU?
- 8 What is the function of Alu in computer?
- 9 What are the basic operations performed by an ALU?
- 10 What is an example of an ALU?
How many operations are supported by the ALU?
ALU Description It supports 6 operations (AND, OR, add, sub, slt, and NOR) in a combinational circuit that calculates a 32-bit output based on two 32-bit inputs and a 4-bit input specifying the ALU operation to perform. The ALU also computes three flag bits, C, V, and Z.
Does the ALU carry out calculations?
ALUs enable mathematical procedures to be performed in an optimized manner, and this can significantly reduce the number of steps required to perform a particular calculation. Today, most CPUs (Central Processing Unit) contain ALUs which can perform operations on 32 or 64-bit binary numbers.
Can ALU perform both arithmetic and logical operations?
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.
What operations does an ALU perform?
function in digital computer The ALU performs simple addition, subtraction, multiplication, division, and logic operations, such as OR and AND. The memory stores the program’s instructions and data.
How many operation selection lines are required for ALU which performs 32 operations?
Some of the data and control lines are shown with a slash and a number like 32. This indicates that the line is actually 32 lines in parallel, e.g. the result is 32-bits wide….1.9 Putting It All Together.
| c1 | c0 | Result |
|---|---|---|
| 0 | 1 | A OR B |
| 1 | 0 | A + B |
| 1 | 1 | A – B |
How does ALU perform addition?
For example, a CPU begins an ALU addition operation by routing operands from their sources (which are usually registers) to the ALU’s operand inputs, while the control unit simultaneously applies a value to the ALU’s opcode input, configuring it to perform addition.
How does a CPU do calculations?
The CPU performs calculations, makes logical comparisons and moves data up to billions of times per second. It works by executing simple instructions one at a time, triggered by a master timing signal that runs the whole computer.
What are the difference between arithmetic and logical operation?
Arithmetic operators perform their actions on numbers. Logical operators compare two values and, based on whether the comparison is true (or false), return either a “true” or “false.”
How many operations selection lines are required for ALU which performs 32 operations?
Which circuit can perform the increment operation of an ALU?
Although the ALU does not include a binary counter circuit, it can also be used to count, by INCREMENTING or DECREMENTING, i.e. to add 1 to data A (incrementing), or subtract 1 from data A (decrementing).
What is the function of Alu in computer?
ALU is the “calculator” portion of the computer. An arithmetic logic unit (ALU) is a major component of the central processing unit of the a computer system. It does all processes related to arithmetic and logic operations that need to be done on instruction words.
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 are the basic operations performed by an ALU?
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.
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.