Additional Resources. 1  American Heart Association Guidelines for Cardiopulmonary Resuscitation and Emergency Cardiovascular Care (2005) 2  Management of Medical Emergencies in the Dental Office: Conditions in Each Country, the Extent of Treatment by the Dentist (2006) 3  Institute of Medical Emergency Preparedness.
GB is an acronym for gigabytes. Gigabytes is a unit of measurement used to quantify different capacities of certain components in a computer. Storage Memory. Hard drives also use the designation GB. It is not considered memory but the amount of information a hard drive can hold.
A little math. As a rule of thumb, a GB or gigabyte is a billion bytes, or 1,000 MB (megabytes), 1,000,000 KB (kilobytes) or 1,000,000,000 bytes. So that 2.5GB cap means that you can transfer 2.5 billion bytes of information before hitting that cap.