Abstract: A keyboard including a key module is provided. The key module includes a keycap, a rigid modular circuit board and a linkage element. The linkage element is located between the keycap and the modular circuit board. The key module is detachably disposed on the keyboard, so that the key module, either in its entirety or as a part, could be disassembled from or assembled to the keyboard.

Abstract: A fund transaction platform includes a transaction database, a receiving module, a processing module and a transmitting module. The receiving module respectively receives a fund borrowing information from a fund borrower end and a plurality of investing information corresponding to the fund borrowing information from investor ends through a network. The processing module determines bid winning investor ends from the investor ends according to the fund borrowing information and the plurality of investing information, and produces a transaction formed information. The transmitting module respectively transmits the transaction formed information to the fund borrower end and each the bid winning investor ends through the network. The investor ends can freely determine the fund transaction conditions to conduct peer-to-peer lending on the fund transaction platform of the present application, so that the targets of financial inclusion are achieved.