A logic circuitry package for a replaceable print apparatus component comprises an interface to communicate with a print apparatus logic circuit, and at least one logic circuit. The logic circuit may be configured to identify, from a command stream received from the print apparatus, parameters including a class parameter, and/or identify, from the command stream, a read request, and output, via the interface, a count value in response to a read request, the count value based on identified received parameters.

Examples of a print liquid supply unit are described herein. In some examples, the print liquid supply unit includes an electrical interconnect. In some examples, the electrical interconnect is sealed in a supply joint from an outside of the supply unit to an inside of the supply unit. In some examples, the supply joint is welded to join housing components of the supply unit.

Examples of a print liquid supply unit are described herein. In some examples, the print liquid supply unit includes an electrical interconnect. In some examples, the electrical interconnect is sealed in a supply joint from an outside of the supply unit to an inside of the supply unit. In some examples, the supply joint is welded to join housing components of the supply unit.

Examples of a print liquid supply unit are described herein. In some examples, the print liquid supply unit includes an electrical interconnect. In some examples, the electrical interconnect is sealed in a supply joint from an outside of the supply unit to an inside of the supply unit. In some examples, the supply joint is welded to join housing components of the supply unit.

A system for detecting the opening of a door to a pressurized room, such as a hospital operating room. A pressure sensor within the room produces a historical record of barometric pressures at the sensor=s location. The opening of the door produces a characteristic variation in the barometric pressure. The invention searches through the record, looking for the characteristic variation. When it is found, the invention issues a door-open signal.

A system for detecting the opening of a door to a pressurized room, such as a hospital operating room. A pressure sensor within the room produces a historical record of barometric pressures at the sensor=s location. The opening of the door produces a characteristic variation in the barometric pressure. The invention searches through the record, looking for the characteristic variation. When it is found, the invention issues a door-open signal.

Systems and methods for mitigating wind throb in vehicles are disclosed herein. An example method includes detecting wind throb in a cabin of a vehicle due to opening of a first window of the vehicle, determining when a seat that is adjacent to a second window of the vehicle is unoccupied, opening the second window when the seat is determined to be unoccupied so as to compensate for the wind throb, determining that the first window has been closed, and closing the second window in response to closing of the first window.

Systems and methods for mitigating wind throb in vehicles are disclosed herein. An example method includes detecting wind throb in a cabin of a vehicle due to opening of a first window of the vehicle, determining when a seat that is adjacent to a second window of the vehicle is unoccupied, opening the second window when the seat is determined to be unoccupied so as to compensate for the wind throb, determining that the first window has been closed, and closing the second window in response to closing of the first window.

In an example, a method includes, by logic circuitry associated with a replaceable print apparatus component installed in a print apparatus, responding to a sensor data request received from the print apparatus by returning a first response; receiving a calibration parameter from the print apparatus; and returning a second response which is different from the first response.

A sensor circuit for a replaceable print apparatus component comprises an interface to transmit signals with respect to a print apparatus logic circuit, and further comprises, connected to the interface, at least two sensor cell arrays, each array including nominally the same cells, the cells of one array being nominally different than the cells of the other array, and at least one single cell sensor that is nominally different than the other cells.