Memory and itsTypes
ER. SHIVANI MAHAJAN
ASSISTANT PROFESSOR (BCA)
KHALSA COLLEGE OF ENGINEERING AND TECHNOLOGY, AMRITSAR.
2.
Introduction to Memory
Memory= storage space in a computer.Stores data, instructions, results.
Essential for computer operations.(Insert diagram: Basic block diagram of
CPU–Memory–I/O)
3.
Why Memory isNeeded Stores instructions for
CPU.Holds data temporarily/permanently.Provides
faster access than storage devices.---Slide 4 –
Classification of MemoryPrimary Memory (RAM,
ROM)Secondary MemoryCache MemoryVirtual
MemoryFlash Memory(Insert diagram: Memory
hierarchy pyramid)
4.
Primary MemoryRAM (RandomAccess
Memory)Volatile, temporary.Types: SRAM,
DRAM.ROM (Read Only Memory)Non-volatile,
permanent.Types: PROM, EPROM, EEPROM.---Slide 6 –
RAM TypesSRAM (Static RAM): Fast, costly, used in
cache.DRAM (Dynamic RAM): Slower, cheaper, used
as main memory.(Diagram: SRAM vs DRAM
comparison)
5.
ROM TypesPROM: Programmableonce.EPROM:
Erasable with UV light.EEPROM: Electrically erasable
and reusable.(Diagram: ROM chip illustration)---Slide
8 – Cache MemoryHigh-speed memory between
CPU & RAM.Stores frequently used
data/instructions.Reduces access time.(Diagram:
CPU–Cache–RAM structure)
