Guide. An iron test checks the amount of iron in the blood to see how well iron is metabolized in the body. Iron (Fe) is a mineral needed for hemoglobin, the protein in red blood cells that carries oxygen. Iron is also needed for energy, good muscle and organ function.
The following errors are the most common symptoms of faulty (or failing) computer memory modules: 1  Computer memory errors. 2  These include system computer memory errors, or blue screen system crashes that reference memory read/write, parity, interrupt, address, page faults, general protection faults or mismatch errors.
Characteristics of Main Memory. 1  These are semiconductor memories. 2  It is known as main memory. 3  Usually volatile memory.  Data is lost in case power is switched 1  off. It is working memory of the computer.  Faster than secondary 1  memories. A computer cannot run without primary memory.