Having the prothrombin mutation increases the risk of developing a DVT (a blood clot in the deep veins, typically the legs) and/or PE (blood clot that travels to the lungs). DVTs are dangerous because they can damage the veins, leading to pain and swelling, and sometimes to disability.
Checksum is the general term. CRC is one kind of checksum. An FCS is. a checksum (typically a CRC) appended to a frame during serial data. transmission, so an FCS is one use of a praticular type of checksum. Some are better than others in detecting specific kinds of errors. Some are more easily computed in software or hardware.
HSA vs HRA. The most significant difference between HSA and HRA is who funds and manages the account. The healthcare savings account can be started by an employee, an employer, both, or an individual who is self employed. A healthcare reimbursement account is only opened and accessed by the employer.