# How do I know if my calculator is correct?

Table of Contents

- 1 How do I know if my calculator is correct?
- 2 Will the computer perform its first calculation and last calculation with same accuracy justify?
- 3 Is the Google calculator accurate?
- 4 What is the computer part that makes calculations easily?
- 5 Why computer is called Accurate Machine?
- 6 How do you count circuits?
- 7 What does it mean to prove a program correct?

## How do I know if my calculator is correct?

So, to determine if a calculator is accurate, you simply need to know the true value of a calculation, then compare that to the answer of the same calculation that the calculator makes . Put simply, we all know that the true answer to 2+2 is equal to 4.

**How does a computer perform calculations?**

Computers turn every number into binary. The numbers that we use are expressed in base 10. Every 10 1s equals 1 ten, every 10 tens equals 1 hundred, and so on. In binary, you go up a unit every 2 numbers.

### Will the computer perform its first calculation and last calculation with same accuracy justify?

The accuracy level is determined on the basis of design of computer. The errors in the computer are due to human and inaccurate data. Even if millions of calculations are to be performed, computer will perform every calculation with same accuracy.

**Do calculators ever make mistakes?**

Yes, calculators can be wrong. They are nothing but simple computers and as such are only as good as their coding and will always have some limitations involving for instance rounding. Some errors can be avoided by paying attention to how you enter a problem if you are aware of the flaw in the coding.

#### Is the Google calculator accurate?

Google search calculator is pretty much accurate. A normal pocket calculator would give you an answer of 1.

**Which part of computer do calculations?**

The arithmetic and logic unit (ALU) is where the CPU performs the arithmetic and logic operations. Every task that your computer carries out is completed here.

## What is the computer part that makes calculations easily?

ALU or Arithmetic Logical Unit is the part of Computer System unit that does all the mathematical calculations. It is a digital electronic circuit that performs arithmetic and bitwise operations on binary numbers.

**What is accuracy of a computer?**

Updated: 04/26/2017 by Computer Hope. Accuracy is a term used to describe anything that is near its true value or recognized standard. For example, a computer may perform an accurate math calculation that is correct with the information given, but is not the exact value.

### Why computer is called Accurate Machine?

Computer is called diligence machine because it can perform the task repeatedly without loosing its speed and accuracy for long time.

**How do you verify that the computed digits are correct?**

Historically, the standard approach for verifying that computed digits are correct is to recompute the digits using a second algorithm. So if either computation goes bad, the digits at the end won’t match. This does typically more than double the amount of time needed (since the second algorithm is usually slower).

#### How do you count circuits?

Circuits can represent one of two different states at any given time: either the presence or absence of a current running through the wires. So, electrically, we count the following way: 1, 10. Now, one of the obvious questions here is: Why 1, 10?

**How do computer hardware and software understand expressions?**

The computer hardware and software understands these as codes, rather than numerical values. More complex expressions can be represented via a decomposition of expressions into simpler parts, which are connected by pointers in the computer’s memory.

## What does it mean to prove a program correct?

The best way to think about this is: proving a program correct means it matches your design. If your design is flawed, your program is equally flawed, but it is still “correct” since it matches spec. Tim• October 2, 2009 8:28 AM