Memory Devices in Computer

Computer में Memory Devices क्या होती हैं ?

Computer में Memory उन hardware component को refer करती है जो processor (CPU) तक पहुंचने और उसके साथ काम करने के लिए data और program instructions को temporary form से stored करते हैं। यह एक critical component है जो computer को program चलाने और work करने में capable बनाता है।

Computer में memory के two main types होते हैं:

  1. Primary Memory/ Main Memory/ Volatile Memory / Temporary Memory / Short Time Memory / Semi-Conductor Memory / Internal Memory
  2. Secondary Memory / Optical Memory / Magnetic Memory / Flash Memory / Permanent Magnetic / Auxiliary Memory / External Memory

Primary Memory

Primary Memory, जिसे main memory या internal memory के form में भी जाना जाता है, computer system की Central Processing Unit (CPU) द्वारा directly accessible memory को refer करता है। यह वह memory है जहां CPU के लिए program execute करने और operation करने के लिए data और instructions stored किए जाते हैं।

Primary Memory के two main types हैं:

  1. RAM (Random Access Memory)
  2. ROM (Read Only Memory)

RAM( Random Access Memory)

RAM (random access memory) computer system में primary memory device है। यह एक type की volatile memory है, जिसका Meaning है कि इसमें stored data को बनाए रखने के लिए constant power की supply की requirement होती है। जब power off हो जाती है, तो RAM में stored data delete हो जाता है।

Computer system में certain kinds की RAM (random access memory) का use किया जाता है:

  • S RAM (Static Random Access Memory)
  • D RAM (Dynamic Access Memory)
  • SD RAM (Synchronous Dynamic Random Access Memory)
  • DDR RAM ( Double Data Rate Random Access Memory )

ROM (Read-Only Memory)

ROM (read-only memory) एक type की non-volatile memory devices है जिसका use computer और अन्य electronic components में किया जाता है। RAM (random access memory) के opposite, जो unstable होती है और power outage पर अपना stored data delete हो जाता है, ROM power off होने पर भी अपना stored data intact रखता है।

Computer और Electronic Components में many types की ROM (read-only memory) का use किया जाता है। यहाँ main types हैं:

  1. Mask ROM (MROM)
  2. Programmable Read-Only Memory (PROM)
  3. Erasable Programmable Read-Only Memory (EPROM)
  4. Electrically Erasable Programmable Read-Only Memory (EEPROM)
  5. Flash Memory

Secondary Memory

Secondary Memory, जिसे auxiliary memory or storage memory के form में भी जाना जाता है, Computer में data और program को permanent form से store करने के लिए use की जाने वाली non-volatile storage devices को referred करता है, भले ही power off हो। Primary Memory (RAM) के opposite, जो unstable है और temporary storage के लिए use की जाती है, secondary memory को long term data storage provide करती है।

यहां कुछ common types के secondary memory device दिए गए हैं:

  1. Hard Disk Drive (HDD)
  2. Solid-State Drive (SSD)
  3. Optical Discs
  4. USB Flash Drives
  5. Memory Cards

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