It's the abbreviation for Mean Corpuscular Hemoglobin. This is a measure for how much hemoglobin per red blood cell count. MCH stands for Mean Corpuscular Hemoglobin. It is a measure of the average amount of hemoglobin in each red blood cell. 9 people found this useful.
Human Interface Device (HID) Definition - What does Human Interface Device (HID) mean? A human interface device (HID) is a method by which a human interacts with an electronic information system either by inputting data or providing output. A myriad of HID devices exist. The most common are the keyboards, mice, computer speakers, webcams and headsets.
These HID class implementation of the USB Component has the following features: 1  All data is exchanged in reports. 2  An interrupt IN endpoint is required for sending input reports to the USB Host. 3  The maximum number of interrupt IN and OUT endpoints is limited to 4  1. The interrupt OUT endpoint is optional.