The robotized gearbox ("ISR") single clutch

This is very simply a conventional gearbox on which adapted a device that engages, disengages and changes gear for you. The "robot" is usually composed of very rapid electric actuators. On sports cars, such as hydraulic actuators are faster.
The whole is controlled by an electronic increasingly sophisticated, taking into account a multitude of parameters.

Two operating modes are available:

Automatic: This is the computer that selects the gear that best suits the situation, according to auto-adaptive. Multiple operating modes (city, sport ...) may be available.
Sequential: you switch gears yourself with a classic appearance lever or steering wheel paddles. However you do not have to manage the clutch.
Note that you can switch from one mode to another as you like, in real time.

advantages:

auto or sequential mode
consumption unchanged from a manual (or even sometimes slightly lower)
less expensive than a conventional automatic gearbox because it is actually a simple manual transmission coupled to a robot
cons:

passage of slow speeds and / or jerk more or less visible depending on the model (approval not always on top)
unlike a traditional automatic transmission there is a clutch that is used and must be replaced as a manual
A few examples:

BMP6 Peugeot-Citroen (not very precisely, Quick Shift at Renault, Volkswagen ASG (the Up!) ...