A keypad for an electronic data-entry device. The keypad includes: a plurality of keys defining a layer of keys; a connection printed-circuit board having a key-press detection portion having an external face oriented towards the layer of keys and an internal face opposite the external face; for each key of the layer of keys, an interconnection element and at least one pair of contacts on the connection printed-circuit board, the interconnection element being intended for making the electrical connection of the contacts of the pair of contacts when the associated key is pressed. The connection printed-circuit board is a flexible printed-circuit board further including a connecting portion forming a fold beneath the internal face of the key-press detection portion, and the pair of contacts is disposed on the internal face.