Power Button Symbol - What Does it Represents

Power Button Symbol – What Does it Represents

The advancements in the field of electronics and electrical appliances are making electronic gadgets more efficient, smart, and less space occupying. You may have observed the change in the power button symbol, as earlier power buttons had a slider or lever which could move to either side of the button physically.

Power button on position

The International Electrochemical Commission (IEC) initially incorporated the power button symbol into their graphical collection for utilization on electrical appliances. The International Electrochemical Commission 60417 standard contains the description of all the power buttons ever designed or used in electronic studies or industry.

Power ON-off Button

The power button symbol is not any casual symbol without any significance. The design of the power symbol button represents significance as the circular part as well as the line denotes something. The invention of microprocessors made switches simple pushbutton and more economical. The processor inside the switch can find out whether the command is to turn ON the switch or OFF.

Let’s understand in detail about the power symbol button:

Multiple types of Power Button used in electronics

What is Power Symbol and what does it mean?

The power symbol denotes the activation and deactivation of the power of a specific device. The power symbol comprises a small circular part and a vertical line part. The circular part represents that the power will disconnect to the device by using this control, whereas the vertical line part represents that the power will flow to the device as completely powered.

The meaning of the power symbol is that it is used to turn ON and OFF the power supply to the device or any electrical appliance. The power symbol has originated when the binary system replaced the ON and OFF term. The numbers of the binary system are 0 and 1. The number 0 is the sign of “Power OFF” and the number 1 is the sign of “Power ON”.

The I and O Power Button Symbols

In order to make a single symbol or button for ON/OFF switches, the numbers 0 and 1, are then combined to form the power symbol. The binary system was used to tag power buttons at the time of the second world war.

These power buttons can be distinguished by the intended purpose for which they are going to be used. These power symbols should not be confused with other power button power symbols found in this article since they are meant to tell you if it’s a power off or power on button.

Power buttons control the power to turn on and off the power of a device. These power symbols are located on home appliances, power tools, and electronic devices like laptops, computers, lights, power outlets, and cell phones.

These power buttons are handy if you want to operate specific devices efficiently without learning how to take them apart or reach for the manual every time you need to use them.

How were I and O Symbols created?

The power button symbols originated when power switches were used to turn the power on and off. It is believed that the I symbol represents the power switch being at its lowest position, while the O symbol is for the power button in its highest position.

People commonly use power on and off icons or power button symbols which are represented by an image of a power switch “I” or “O” to tell us if it’s a power on or power off button. These images have been used across various devices such as computers, appliances, and electronic devices like cellphones.

The power button symbols are usually depicted as “O” or “I” signs to indicate that the power is turned off. “I” symbol represents power being on, while the “O” means power is off. The power button symbols have been used in products from personal computers to cellphones since the early 1980s.

Next time you power up your computer, turn on the television or get ready for a long-distance call, take a look at those power buttons. You should see one of these two power sign i-o icons next to it!

So, where did this I and O originated? It all started with Morse code, an abbreviation for short dot (·) and long dash (-).  The power button is actually a combination of the power on and power off symbols. The more extended power sign (O) represented power on while the shorter power sign (I) stands for power off.

Since the i-o icons are tiny, users can easily misinterpret them as “i” or “o” depending on what language they speak. To prevent confusion, manufacturers usually opted to use other power buttons symbols such as light bulbs, computer mice, and even musical notes! Icons don’t have to look like that in order to carry their meaning, though.

Different Types of Power Button Symbols

  • Button power symbols with power cords: this power symbol is commonly used in power and ON-OFF switches. When a switch has a power cord, it usually means the power comes from somewhere else. So when the button inside a case or on the front panel of your PC is slid to “off,” it cuts off its power supply from outside sources and stops using its own power source as well. If you have ever not known where to plug in an AC adapter for your PC, chances are you might have accidentally turned it off before even connecting anything.

– power symbol with the power cord plugged in ( power is active )

– power symbol with power cord unplugged ( power is inactive )

  • Button power symbols without power cords are usually seen on an AC adapter or a DC battery charger. When you plug the power cable into a source, it will then have its “power switch” turned on as well and become active. And when you pull out the AC/DC cable from any of them, its corresponding button power symbol will be turned off to indicate that a disconnection has been made. If this type of button power symbol does not show a wire coming out of it, then it is meant to be used only for display purposes and never needs to be touched by the power supply.
  • Sometimes power cords are shown with connectors on both ends. Then there may be extra symbols, such as the “IN” and “OUT” arrows that indicate the direction of power flow, or even some specialized ones to display power capacity, power-on status…etc.

Let’s take a look at the zero with a slash design of the power button symbol:

Power Button . Power off position

Zero with a slash design of the power button symbol is a perfect design to represent the scientific information of the flow of current in the best and easiest way possible.

The zero in the power button indicates that the flow of current is hindered. There is no net flow of current in the circuit when zero is pushed. The slash or 1 in the design indicates that the circuit is complete, and the current is flowing through the circuit. When the current flows through the circuit, it leads to turns ON the device.

The zero with a slash is basically a representation of ON/OFF symbols. The ON/OFF symbols can be recognized by the change in the color of the power button.

Power Button Switch type 2 Power Button Switch type 3

The power button symbol is a standardized and internationally accepted symbol. The reason is that the function of the power button symbol can be understood by people all over the world.

Explanation on Power Symbols For The Way We Use Them Today

We use different types of power symbols. If you are ever confused about power symbols, just think of the power button on your TV or for digital devices; power buttons are found on most laptops and PCs and also digital products such as a phone/tablet or a DVD player.

These power icons give users an indication of what type of power is required to use these machines (e.g., AC power icon means that it requires an alternating current power supply).

Therefore, they should not be used in combination with any other power symbol shown here. These power symbols will have different meanings if combined with any other power symbols mentioned above except for the ones which we commonly use nowadays when referring to “power.”

Is Symbol necessary for Power Buttons?

Yes, symbols are needed for power buttons. Without power symbols, it would be impossible to discern if we had pushed the power switch successfully or not. Without power symbols on power switches, people might get confused about which of the switches controls the power supply, and they could push all of them to test which one turns the device ON and OFF. Therefore power symbols on buttons provide humans with clear signals when using digital devices such as computers or fans.

Power button symbols like these can be found in different industries. They represent the power button that will control the power source of a particular device. For instance, this symbol represents a fire alarm control panel, while another one represents an electric switchboard inside a building. The importance of understanding what these symbols mean is necessary.

The power button symbol does not depend on the language used in any particular part of the world. You will remember this article from now onwards whenever you look at a power button. I hope you have found this article interesting, and all your queries related to the power button symbol are resolved.

Thank you!

Related Posts

2 thoughts on “Power Button Symbol – What Does it Represents

  1. Appreciating the hard work you put into your website and the in-depth information you present. It’s nice to come across a blog every once in a while that isn’t the same unwanted rehashed material. Great read! I’ve saved your site and I’m adding your RSS feeds to my Google account.

Leave a Reply

Your email address will not be published.