Due to the development of the technology and financial collection industry, ordinary conventional keyboards have not been well adapted to the flexible application in their application fields, so there is a keyboard capable of autonomous programming of each key---programmable keyboard. The difference between a programmable keyboard and a regular keyboard: 1 The number of buttons. In addition to the 101 and 104 keys, the programmable keyboard has 60 keys, 78 keys, and so on. . It should be said that there is no standard, the number of keyboards can be determined according to the needs of the developer. The alphabetical arrangement of the programmable keyboard does not have the same fixed pattern as the conventional keyboard, which can reflect more personalization and specialization. 3 Button definition. The programmable keyboard allows you to define each button multiple times. Can be defined as text, letters or an instruction. Each keyboard will have a corresponding programming program that is easy to learn.