1.2

1.2

1. key words.

   • MAR-Memory address register.
   • MDR-Memory data register.
   • CIR-Current instruction register.
   • PC-Computer program
   • AIU-Arithmetic logic unit.
   • RAM-Volatile
   • flash memory-memory stick
   • more memory-more process
   • firmware-permanent software programmed into ROM

2. solid state

   • solid state electrons means semi conductor electrons; electronic equipment using semi conductor devices diodes, transitors, and integrated circuits.
   • solid state storage can be found in three form factors;solid start drive, solid starts cards, and solid state modules, an important advantage of solid storage is that it contains no mechanical parts allowing data to transfer to and from storage media

3. virtual memory

   • in computing virtual memory is a memory management, technique that provides an idealized abstraction of the storage.
   • virtual memory might contain twice as many addresses as main memory the process of translating virtual addresses into real addresses is called mapping
   • it allows us to run more applications on the system than we have enough physical memory to support
   • the computers operating system using a hardware and software.
   • it is a memory management capability of an OS that uses a hardware and software to allow a computer to compensate for physical memory storages by transferring data.