Abstract: A semiautomatic electronic printer comprises a housing (2) and, internally, a print head (8). A push-button (3), projecting upwards from the housing (2), is rigidly connected to a frame (7), which is mounted in a spring-charged relationship inside the housing (2) in such a manner to be vertically movable between a rest position and a working one. The frame (7) sustains in the upper part a printed circuit board including a microprocessor for acquiring from a separate computer data that has to be printed, and for storing such data, as well as for controlling the operation of the print head (8), supported by a carriage (20), with its inferior part being brought to touch the medium to be printed when the push-button is pushed downwards and to translate horizontally after the printing of a line of dots until a desired imaging made of a dot matrix has been printed on the all printing surface.

Abstract: A semiautomatic electronic printer comprises a housing (2) and, internally, a print head (8). A push-button (3), projecting upwards from the housing (2), is rigidly connected to a frame (7), which is mounted in a spring-charged relationship inside the housing (2) in such a manner to be vertically movable between a rest position and a working one. The frame (7) sustains in the upper part a printed circuit board including a microprocessor for acquiring from a separate computer data that have to be printed, and for storing such data, as well as for controlling the operation of the print head (8), supported by a carriage (20), with its inferior part being brought to touch the medium to be printed when the push-button is pushed downwards and to translate horizontally after the printing of a line of dots until a desired imaging made of a dot matrix has been printed on the all printing surface.

Abstract: A system (10) for identifying brain activity, comprises a plurality of electrodes (14), said electrodes being arranged on a supporting structure (12) to be placed on a skull of a person, said electrodes (14) producing signals in accordance with the brainwaves of said person, amplifying means for amplifying the electrical signals sensed by said electrodes, data processing means (26) for processing said amplified signals, identifying a specific mental state from said signals and generating a signal indicative of said recognised mental state, and transmitter means for transmitting a signal corresponding to said identified mental state to a computer (22).