Knowing How to Read Binary Will Help You Understand Computers More (2024)

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Learning how to read binary helps with understanding computers

By

Ryan Dube

Knowing How to Read Binary Will Help You Understand Computers More (1)

Ryan Dube

Writer

  • University of Maine

Ryan Dube is a freelance contributor to Lifewire and former Managing Editor of MakeUseOf, senior IT Analyst, and an automation engineer.

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Updated on May 10, 2022

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In This Article

  • How to Read Binary Code
  • Signed Binary Numbers
  • Understanding Binary Numbers

What to Know

  • Simple unsigned binary numbers consist only of ones and zeros. Start at the right-most digit and work to the left.
  • The zeros are always zero. Each position represents increasing powers of 2 starting with 20, which equals 0.
  • Add the values of all the numbers for the more familiar base 10 result.

This article explains how to read simple unsigned binary numbers and includes information on signed binary numbers, which can indicate either positive or negative numbers.

How to Read Binary Code

"Reading" binary code typically means translating a binary number into a base 10 (decimal) number that people are familiar with. This conversion is simple enough to perform in your head once you understand how the binary language works.

Each digit location in a binary number has a specific value if the digit isn't a zero. Once you've determined all those values, you simply add them together to get the base 10 (decimal) value of the binary number.

To see how this works, take the binary number 11001010.

  1. The best way to read a binary number is to start with the right-most digit and work your way left. The power of that first location is zero, meaning the value for that digit, if it's not a zero, is two to the power of zero, or one. In this case, since the digit is a zero, the value for this place would be zero.

    Knowing How to Read Binary Will Help You Understand Computers More (2)

  2. Next, move on to the next digit. If it's a one, then calculate two to the power of one. Make a note of this value as well. In this example, the value is two to the power of one, which is two.

    Knowing How to Read Binary Will Help You Understand Computers More (3)

  3. Continue to repeat this process until you get all the way to the leftmost digit.

    Knowing How to Read Binary Will Help You Understand Computers More (4)

  4. To finish, all you need to do is add all of those numbers together to get the overall decimal value of the binary number: 128 + 64 + 0 + 0 + 8 + 0 + 2 + 0 = 202

    Another way to see this entire process in equation form is as follows: 1 x 27 + 1 x 26 + 0 x 25 + 0 x 24 + 1 x 23 + 0 x 22 + 1 x 21 + 0 x 20 = 202

Signed Binary Numbers

The method above works for basic, unsigned binary numbers. However, computers need a way to represent negative numbers using binary as well.

Because of this, computers use signed binary numbers. In this type of system, the leftmost digit is known as the sign bit, while the remaining digits are known as the magnitude bits.

Reading a signed binary number is almost the same as unsigned, with one minor difference.

  1. Perform the same procedure as described above for an unsigned binary number, but stop once you reach the leftmost bit.

    Knowing How to Read Binary Will Help You Understand Computers More (5)

  2. To determine the sign, examine the leftmost bit. If it's a one, then the number is negative. If it's a zero, then the number is positive.

    Knowing How to Read Binary Will Help You Understand Computers More (6)

  3. Now, perform the same calculation as before, but apply the appropriate sign to the number as indicated by the leftmost bit: 64+0 +0+8+0+2+0 = -74

  4. The signed binary method allows for computers to represent numbers that are either positive or negative. However, it does consume an initial bit, meaning larger numbers require slightly more memory than unsigned binary numbers would.

Understanding Binary Numbers

If you're interested in learning how to read binary, it's important to understand how binary numbers work.

Binary is known as a "base 2" numbering system, meaning there are two possible numbers for each digit; a one or a zero. Larger numbers are written by adding additional ones or zeros to the binary number.

Knowing how to read binary isn't critical for using computers, but it's good to understand the concept to gain a better appreciation for how computers store numbers in memory. It also allows you to understand terms like 16-bit, 32-bit, 64-bit, and memory measurements like bytes (8 bits).

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Knowing How to Read Binary Will Help You Understand Computers More (2024)

FAQs

How does binary help computers? ›

Why Is Binary Important? Binary plays a critical role in computing because it allows computers to store and manipulate data using a system of switches that can be turned on or off, represented by the digits 0 and 1 . This binary code can represent any type of data, from text and numbers to images and sound.

Is knowing binary useful? ›

The binary system has helped technology advance over the centuries. By learning the binary language, you can further develop the technologies to help us get more control over the computer hardware. There is always something new to learn with so many programming languages.

Why is it important to understand binary numbers? ›

The binary number system is the base of all computing systems and operations. It enables devices to store, access and manipulate all types of information directed to and from the CPU or memory.

How does a computer know how do you interpret binary? ›

The binary number system comes into play because on and off can be represented numerically by 1 and 0. Thus, the off and on positions of an electrical switch inside a computer are physical representations of 1s and 0s. If a switch is on, it is represented by 1, and electricity flows through the transistor.

Do computers think in binary? ›

All digital computers rely on a binary system of ones and zeros, and on rules of logic set out in the 1850s by English mathematician George Boole. A computer can represent the binary digits (bits) zero and one mechanically with wheel or lever positions, or electronically with voltage or current.

Is binary still used today? ›

Current uses of binary

Most modern computers use binary encoding for instructions and data. CDs, DVDs, and Blu-ray Discs represent sound and video digitally in binary form. Telephone calls are carried digitally on long-distance and mobile phone networks using pulse-code modulation, and on voice over IP networks.

How to use binary in real life? ›

The most common application of the binary system is in computer science and electrical engineering. The logic gates of the electrical engineering field are all based on on/off states or high/low voltage states, and computers are constructed from electrical circuits.

How hard is it to learn binary? ›

Don't worry; it's easier than you think. Binary is about as simple as it can get. It's either on or off. 1s and 0s.

Can a person read binary? ›

"Reading" binary code typically means translating a binary number into a base 10 (decimal) number that people are familiar with. This conversion is simple enough to perform in your head once you understand how the binary language works.

What jobs use binary? ›

binary code jobs
  • Production Assistant. ...
  • Senior Front End Developer (Chinese Speaking) ...
  • C++ Developer / Software Engineer (Chinese Speaking) ...
  • Junior Product and Pattern Designer. ...
  • Customer Service & Operations Assistant. ...
  • Strengthen your profile. ...
  • Head of Student Wellbeing and Disability Service (Maternity Cover)

What are the benefits of binary language? ›

Binary devices are much faster than analog devices. There is nothing inherently faster about a binary signal than an analog one. Binary signals can be copied flawlessly.

What is a simple way to explain binary? ›

The binary system is a way of representing data using 0s and 1s. This system is used by computers to represent all the data it works with. To compute a number in this system, you would multiply the digit value by the place value, then add them all together.

How to say hello in binary code? ›

E is 69 or 01000101. L is 76 or 01001100. O is 79 or 01001111. So, the word HELLO is 01001000 01000101 01001100 01001100 01001111 in binary.

Why do computers understand only binary? ›

Answer: Yes, A computer can only understand binary digits. Not only because it's a reliable way of storing the data, but computers only understand 1s and 0s — binary. A computer's main memory consists of transistors that switch between high and low voltage levels — sometimes 5V, sometimes 0.

How is binary used in computers? ›

The binary system is based on two numerals: 0 and 1. Computers use binary because it's the simplest method for counting available and is how a computer runs everything through your phone or PC, from memory to HD video streaming.

What is the benefit of the binary system? ›

Each place value is a power of 2. Computer language uses a binary number system with zero representing an 'off' position and one representing an 'on' position. Advantages include ease of use in coding, fewer computations and less computational errors.

Why do computers use binary kids? ›

Computers can't actually understand human language, they work in binary because that's easiest to work with. A computer is built on electrical signals, and if the signal is on, it represents a one. If it's off, it represents a zero. These ones and zeros string together to represent numbers, in base 2.

What do computers use binary to store? ›

Binary code is the language of computers, with all data and instructions being represented by combinations of ones and zeros. This allows them to store large amounts of data efficiently while providing a simple way to process and analyse it.

Why do computers convert to binary? ›

Therefore, in order for a computer to be able to process any kind of data, including text, images and sound, they must be converted into binary. Also known as base 2. form. If the data is not converted into binary – a series of 1s and 0s – the computer will simply not understand it or be able to process it.

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