A memory is anything about which data are to be collected and stored.
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Memory is a generic term for storing data on a computer. Memory is usually referred to as RAM, short for Random Access Memory. Memory serves as a temporary data storage area. Memory works by storing & supplying important data needed by the processor quickly to be processed into information. Where the greater the capacity, the more data that can be stored and supplied, which ultimately makes the processor work faster. Data supply to RAM comes from Hard Disk, a device that can store data permanently.
Memory capacity is expressed in bytes (1 byte = 8 bits) or words, word length is generally 8,16.32 bits.
Memory Cycle Time. It consists of access time plus the additional time needed by the transient to be lost on the signal channel or to reproduce the data if this data is read destructively.
Transfer Rate. The transfer rate is the speed at which data can be transferred to a memory unit or transferred from a memory unit. In RAM, transfer rate = 1 / (ikius time). For non-RAM there is a relationship:
N = TA + N / R
TN = Average time to read or write N bits.
TA = Average access time.
N = Number of bits.
R = transfer speed, in bits per second (bps).
There are four types of methods:
- Sequential access. Memory is organized into data units called records.
- Direct access. Direct access includes a shared Read/write mechanism. Each block and record has unique addresses based on physical location.
- Random access. The time to access a particular location does not depend on the order of previous access and is constant.
- Associative. A word is sought based on its contents and not based on the address.
Some types of memory that are widely used are as follows:
- Processor register
- RAM or Random Access Memory
- Cache Memory (SRAM) (Static RAM)
- Physical memory (DRAM) (Dynamic RAM)
- Magnetic disk-based storage device
- Optical disk-based storage device
- Memory that can only be read or ROM (Read Only Memory)
- Flash memory
- Punched Card (old fashioned)
- CD or Compact Disk
- DVD
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Definition of Memory brainly.com/question/2898533
Method and type of memory brainly.com/question/2898533
Details
Class: high school
Subjects: Computers and Technology
Keywords: Memory, RAM, Data, storage
