Expected Levels. Total hardness in freshwater is usually in the range of 15 to 375 mg/L as CaCO3. Calcium. hardness in freshwater is in the range of 10 to 250 mg/L, often double that of magnesium. hardness (5 to 125 mg/L). Typical seawater has calcium hardness of 1000 mg/L, magnesium.
Part of the Storage management glossary: A physical address is a binarynumber in the form of logical high and low states on an address busthat corresponds to a particular cell of primary storage(also called main memory), or to a particular register in a memory-mapped I/O(input/output) device.
PHYSICAL MEMORY Study Guide. Memory management at the hardware level is concerned with the electronic devices that actually. store data. There are basically two types of physical memory: ROM and RAM. Different. variations of physical memory are used for System RAM, Cache RAM, System ROM. Memory, BIOS ROM / Flash BIOS ROM, CMOS, Keyboard Controller, Bus System RAM, and Expansion Card RAM, etc.