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MEMORY SYSTEM ORGANIZATION AND ARCHITECTURE (:explode: SECONDARY STORAGE…
MEMORY SYSTEM ORGANIZATION AND ARCHITECTURE
:explode: DATA INTEGRITY
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Ways that can affects data integrity
Errors that occur when data is transmitted from one computer to another
Software bugs or viruses
Human errors when data is entered
Hardware malfunctions,
Natural disasters
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Ways to keep data integrity
Backing up data regularly
Controlling access to data via security mechanisms
Designing user interfaces that prevent the input of invalid data
Using error detection and correction software when transmitting data
:explode: SECONDARY STORAGE
also known as external/auxiliry storage
Storage that is not currently in a computer's primary storage
Not directly accessible by the CPU
consists of storage on the hard disk and on any removable media
Storage medium
Storage device
Writing
Reading
Capacity