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MEMORY PPT

Full explanation of memory <br>Types of memory

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MEMORY PPT

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  1. www.pskitsevices.com 9975288300 Hardwarenotes

  2. MEMORY Memory is a holding area for data, instructions, and information. Like microprocessor& ram, memory is contained on chips connected to the system board. There are three well-known types of memory chips: Random-access memory (RAM), read-only memory (ROM), and flash memory. • 1. Ram chips hold the program and data that the CPU is presently processing. • 2. RAM is called temporary or volatile storage because everything in most types of RAM is lost as soon as the microcomputer is turned off. • 3. It is also lost if there is a power failure or other disruption of the electric current. • 1. Rom chips have information stored in them by the manufacturer. • 2. Rom chips are not volatile and cannot be changed by the normal user. • 3. Rom IC Contain BIOS /UEFI Program. • 4. Integrated circuits that are used to permanently store start-up (boot) instructions and other critical info ROM (Read only Memory) RAM (Random Access Memory) ROM (Read only Memory)

  3. Types of RAM DRAM SRAM EDORAM RDRAM CACHE DDR1 DDR2 DDR3 DDR4

  4. Static Ram (Caches Memory) • The CPU process data at a very high speed. • Dynamic RAM cannot match that speed. • Hence, a special type of RAM called as cache is used. • Frequently access instruction and data will be stored in cache • Cache levels: • -The cache memory that is placed inside the processor is called as level 1 cache (internal • - The cache memory located on the die of the processor is called as level 2 cache (external). • Steps of Identifying Ram • 1. EDORAM (Extended Data Out Ram) • Its having 30 Pins & 72 Pins • 1 Notch in 72 pins EDORAM • No notch in 30 pins EDORAM • Frequency 64MHz • 2. RDRAM (Rambus Dynamic Ram) • Its Having 184 & 192 ,202 Pins • Two notches Available But Very Close • Frequency 100MHz

  5. 3. SDRAM (Synchronous Dynamic Ram) • Its Having 168 Pins • Two notches Available But in in Distance • Frequency 133 MHz , 333 MHz ,400 MHz • Use in Celeron / P3 , P4 PC but Pins CPU • 4. DDR 1 (Dual data Rate) • Its having 184 pins • 1 notch present • Frequency 400 MHz • Use in Celeron /P4 , Dual Core (pins & pin-less cpu) • 5. DDR 2 (Dual data rate) • 1 notch present • Its having 240 pins • Frequency 533 MHz, 667 MHz, 800MHz • Use in Celeron , Pentium 4 / D , Dual Core , Core 2 Due

  6. 6. DDR 3 (Dual data rate ) • Its having 240 pins • 1 notch present • Frequency 1066 MHz, 1333MHz, 1600MHz • Use in Pentium 4 , Dual Core , Core 2 Due , i3,i5,i7 CPU (1st to 5th Gen ) • 7. DDR 4 (Dual data rate) • Its having 284 pins • 1 notch present • Frequency 2333 MHZ, 4161 MHz • Use in Dual Core , i3,i5,i7 CPU (6th,7th to 8th Gen) • RAM SLOT’S • SIMM (single inline Memory Module) • RIMM (ram-bus inline Memory Module) • DIMM (dual inline Memory Module)

  7. RAM VOLTAGE • SDRAM 3.3 V • DDR-1 2.5 V • DDR-2 1.8 V • DDR-3 1.5 V • DDR-4 1.2 V

  8. 9975288300 www.pskitservices.com Fortune Mall lower ground floor, Buty Rd, near Maharashtra bank, near metro station, Sitabuldi, Nagpur,

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