Types, Applications, and Layout of the Keypad


If you need a new keypad, you can begin your search by defining your requirements. This article will discuss the different types of keypads, including numeric, calculator, and stand-alone PIN pads. To use a PIN pad, you should define the materials, colours, and dimensions. This ambiguity can lead to delays in the manufacturing process. Buyers, engineers, and salespeople are notorious for under or over-complicating keypads, leading to wildly different costs, lead-time, and engineering needs.

Numeric Keypads:

A computer keyboard usually has a numeric keypad located on the right side. The numeric keypad contains the number keys 0 to 9 and the arithmetic operators and decimal point. The numeric keypad also has the Enter, Delete, and Num Lock keys. When using a computer keyboard, the right thumb and pinky finger should rest on the Enter key. Once you're done typing, you can press the Enter key to continue.

If you need a numeric keypad, you can purchase a stand-alone version. These devices plug into a USB port and allow you to use them with a laptop or a tenkeyless keyboard. These keyboards have advantages, and you can purchase whichever suits your needs best. They make data entry a lot easier and are ideal for various applications. This article will explore some of the different numeric keypads available today.


Numeric keypads are a versatile accessory for notebook computers. The 21-key model, manufactured by Targus, has premium scissor-switch keys. Its compact size makes it a good choice for travelling, and the 2.4-GHz wireless signal makes it compatible with most laptops. Despite the small size, this model has a powerful battery life and does not come with many extra features.

Most numeric keypads come with standard 0-9 keys and decimal and arithmetic sign keys. Numeric keypads may also have a "tab" key for spreadsheet navigation. Some models even have arrow keys for added functionality. The buttons may also include a delete key, home, end, and paging keys. If you don't have a USB port, you can opt for a wireless numeric keypad.

Calculator Keypads:

In addition to their many uses as input devices, calculator keypads are also suitable for entering PINs and selecting products. Many devices use keypads, including ATMs, vending machines, time clocks, and digital door locks. Calculator keypads typically do not have the four arithmetic operations (a, B, C, D, and F) or the decimal point and equal sign. These are often mistaken for stand-alone calculators.

The calculator keypad is the most popular type of input device today. It was first employed as a data entry method in early 1800s cash registers.  IBM patented the design and made it standard for calculators. In 1965, Alphonse Chapanis, a scientist at Bell Labs, conducted dozens of hours of research and developed a keypad that mimicked the rotary dial's layout.

Layouts of Calculator Keypads:

There are many different layouts for numeric and digit keys. The Bell Labs determined the layout of the digit keys through extensive human factors research.  Mechanical calculators were not widely common until the 1950s, so few people had experience with them. Only after the 1960s did the keypad layout become standard. It may also be worth noting that a calculator's layout is not set in stone. It may change over time as the device becomes more common.

As a result, the telephone keypad is nearly thirty years older than calculator keypads. Researchers at Bell Labs conducted experiments testing different layouts, from a circle to an arc to three rows of buttons. However, the definitive study was not published until 1960, when R. L. Deininger published Human Factor Engineering Studies on Push Button Telephone Sets. The study concluded that the calculator keypad was slightly faster than the telephone keypad, making it the standard for computers.

Stand-alone PIN Pads:

Stand-alone PIN pads for keypad devices allow customers to enter their PIN to complete a purchase. Most come in the form of hand-held devices. These are great for any point of sale, and some have a built-in scanner that can read various credit cards. This review will discuss the benefits of the PAX S300. It is a good option for many businesses because it is lightweight and can work at any point of sale.

Applications and Benefits:

Stand-alone PIN pads for keypad devices are suitable for indoors and outdoors and are easy to install in a single-gang or flush-mount design. Typically, they can accommodate a wide range of PIN codes, from one to six digits, and are programmed with a master code. Stand-alone PIN pads are a great backup for electric access systems. The only drawback to a stand-alone PIN pad is that it requires using a keypad to operate.

While there are advantages and disadvantages to both, stand-alone PIN pads are the most affordable and versatile option. They make keyless entry much easier for everyone. The most popular choices are keypad entry locks from Yale, Schlage, and Dormakaba. Many of these locks also support keycard and mobile unlocking with biometrics. There are also many PIN pads available for home or office use.

Embedded -PIN pads:

Many blue-collar and industrial jobs require the use of PIN pads for timekeeping. However, these devices are prone to hacking because of coworkers' badgering. These situations need more meaningful biometric solutions.


Embedded PIN pads on keypads can help speed up the transaction process. The Ingenico iPP350 and the Ingenico iSC Touch 250 are two of the most expensive options. These devices also offer NFC and signature capture functionality. Despite the high price tag, they meet the business requirements of the retail sector. With these features, they can help make payments faster and simpler.

The first type of embedded PIN pad works with the microcontroller chip inside. Its main function is to process the signals sent by keypads. Microcontrollers detect the corresponding pin reading by pressing the button. The rows and columns are pulled up when there is no button press. Similarly, a 3x4 keypad would require seven microcontroller pins and twelve without the row and column method.

Embedded PIN pads on keypads are a way for consumers to buy goods and services without having to swipe their cards. Upon hacking, embedded PIN pads protect the user's data by automatically erasing it. The most basic PIN pads do not require a card swipe but allow the user to enter a four-digit code and accept or decline a transaction.

Embedded calculator keypads:

Embedded calculator keypads come in several forms. The most common form is the standard keyboard, which has a standard number pad keypad for digits 0-9, plus Fn+Delete keys, an additional backspace key, and a "000" button. Some keypads have additional buttons that allow you to enter a number without resetting the entire keyboard. 

IZO Number Pad:

This wireless numeric keypad functions as a stand-alone calculator. It is made from the same materials as the IZO keyboard and is an aesthetic addition to any workspace. The backlight is a lighter shade to create a tri-colour effect, and the buttons on the keypad act as the calculator's function keys. A number pad is an excellent addition to a workstation or a desk, but it is not an essential accessory for every computer.


Embedded calculator keypads are often difficult to replace. In some cases, the keypad is difficult to access, making it impossible to use the calculator's functions. Other keypads might be easier to use and may be less expensive. If you are looking for an alternative, you might want to consider an external keyboard. You can also purchase an external calculator to control the functionality. When buying an external calculator, check with the manufacturer if the calculator comes with a keyboard.

Embedded calculator keypads are similar to telephone keypads but differ in layout. Both keyboard layouts are functionally equivalent. However, common sense explains the differences in layout. Common sense suggests that technological constraints played a role, but history explains some theories better. There are two main types of calculator keypads. Embedded calculator keypads are often the result of a patent dispute, while telephones are designed around a telephone keypad layout.

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