A capacitive logic memory cell (100; 800), comprising: - a bistable system comprising a fixed element and a mobile element capable of taking one or the other of two stable positions with respect to the fixed element; - a read device comprising a variable-capacitance capacitor comprising a first fixed electrode and a second mobile electrode joined mechanically to the mobile element; and - an electrically controllable write device for placing the mobile element in one or the other of its two stable positions, characterized in that the bistable system is: a) an electrostatic system comprising: - a fixed electrode (301; 601) and a mobile electrode (303; 603), the fixed electrode (301; 601) comprising two conductive parts (301a, 301b; 601a, 601b) electrically connected to each other and disposed on either side of the mobile electrode (303; 603); - a return spring for returning the mobile electrode (303; 603) to a rest position; and - a voltage application circuit for applying a direct bias voltage between the fixed electrode (301; 601) and the mobile electrode (303; 603), or b) an electrodynamic system comprising: - a fixed conductive coil and a mobile element made of a ferromagnetic material disposed inside the coil; - a return spring for returning the mobile element made of a ferromagnetic material to a rest position; and - a current application circuit for applying a direct bias current between first and second ends of the coil. - a bistable system comprising a fixed element and a mobile element capable of taking one or the other of two stable positions with respect to the fixed element; - a read device comprising a variable-capacitance capacitor comprising a first fixed electrode and a second mobile electrode joined mechanically to the mobile element; and - an electrically controllable write device for placing the mobile element in one or the other of its two stable positions, a) an electrostatic system comprising: - a fixed electrode (301; 601) and a mobile electrode (303; 603), the fixed electrode (301; 601) comprising two conductive parts (301a, 301b; 601a, 601b) electrically connected to each other and disposed on either side of the mobile electrode (303; 603); - a return spring for returning the mobile electrode (303; 603) to a rest position; and - a voltage application circuit for applying a direct bias voltage between the fixed electrode (301; 601) and the mobile electrode (303; 603), or - a fixed electrode (301; 601) and a mobile electrode (303; 603), the fixed electrode (301; 601) comprising two conductive parts (301a, 301b; 601a, 601b) electrically connected to each other and disposed on either side of the mobile electrode (303; 603); - a return spring for returning the mobile electrode (303; 603) to a rest position; and - a voltage application circuit for applying a direct bias voltage between the fixed electrode (301; 601) and the mobile electrode (303; 603), or b) an electrodynamic system comprising: - a fixed conductive coil and a mobile element made of a ferromagnetic material disposed inside the coil; - a return spring for returning the mobile element made of a ferromagnetic material to a rest position; and - a current application circuit for applying a direct bias current between first and second ends of the coil. - a fixed conductive coil and a mobile element made of a ferromagnetic material disposed inside the coil; - a return spring for returning the mobile element made of a ferromagnetic material to a rest position; and - a current application circuit for applying a direct bias current between first and second ends of the coil.