The dry cell is used in
Radios
Cameras
Clocks
A dry cell uses an electrochemical reaction to generate electricity. It is not a rechargeable cell i.e. once the cell gets used up it is discarded and cannot be used again. Examples, where the dry cell is used, is cameras, radios, clocks, toys etc.
Calculators use mercury cells which are also non-rechargeable cells. It is advantageous because of its small size.