con sólo pulsar un botón

= at the press of a button, at the flick of a switch, with the flick of a switch

Ex. The interface usually includes a control keyboard, a modem, and an auto-dialler (for calling the data-base computer and identifying the calling terminal at the press of a button).

Ex. It may now be possible to lower your blood pressure at the flick of a switch by stimulating parts of the brain with electrodes.

Ex. Either armor piercing or high explosive ammunition may be selected with the flick of a switch.

* * *

= at the press of a button, at the flick of a switch, with the flick of a switch

Ex: The interface usually includes a control keyboard, a modem, and an auto-dialler (for calling the data-base computer and identifying the calling terminal at the press of a button).

Ex: It may now be possible to lower your blood pressure at the flick of a switch by stimulating parts of the brain with electrodes.

Ex: Either armor piercing or high explosive ammunition may be selected with the flick of a switch.