Memory (2)
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Memory refers to devices that store programs and data for computers. There are different types of memory: 1. RAM allows temporary storage of programs and data for processing. RAM includes SRAM and DRAM. 2. ROM permanently stores programs and data. ROM includes PROM and EROM. 3. Cache memory improves performance by storing frequently accessed data and instructions closer to the processor. It includes L1 and L2 cache. Secondary memory provides long-term storage and includes hard drives, solid state drives, USBs, CDs, and DVDs. It loads data into RAM for processing by the CPU.
Memory (2)
- 1. Presentation on Memory And its Types الرحیم الرحمن ہللا بسم
- 2. What is Memory In computing,memory refers to the devices used to store programs or data on a temporary or permanent basis for use in a computer or other digital electronic device.
- 3. Types of memory 1.Random Access Memory (RAM) 2.Read Only Memory (ROM) 3.Cache and Secondary Memory
- 4. Random access memory A random-access memory device allows data items to be read and written in roughly the same amount of time regardless of the order in which data items are accessed. Types of ram 1. Static RAM (SRAM) 2. Dynamic RAM (DRAM)
- 5. Static RAM >.Fast and consume low power. >.Expensive and has complex structure(6 transistor)so not used for high capacity applications. >.Fastest type of memory. dynamic ram >.Stores each bit of memory in capacitor in an integrated circuit. >.Real capacitor leaks charge so capacitors need to be refreshed periodically. >.Simple structure(1 capacitor and 1 transistor per bit) so it has very high capacity.
- 6. RANDOM access memory In Random Access Memory new contents can not be added,it is used to store the instructions of routine type,permanent in nature and used to control or supervise the hardware. Types of rom 1.Programmable ROM (PROM) 2.Erasable ROM (EROM)
- 7. PROGRAMMABLE ROM >.Programmed to record the information using a facility PROM-programmer. >.Once the information is recorded it can not be changed. >.You can buy a blank chip and have a PROM programmer program it with your stuff. Erasable rom >.The cool thing about this one is that you can rewrite this type of memory. To erase a previous program though, you need to set it under some form of UV light for a specified amount of time before being able to rewrite it.
- 8. Cache memory >.Faster and expensive than RAM. >.It improves the computer’s performance. >.Processor can use it to store frequently accessed data and programs instruction. >.It is of two types 1.primary or L1 cache (inside processor) 2.secondary or L2 cache (in the motherboard or near the microprocessor.
- 9. Cache memory
- 11. Secondary memory refers to storage devices, such as hard drives and solid state drives. It may also refer to removable storage media, such as USB flash drives, CDs, and DVDs. Unlike primary memory, secondary memory is not accessed directly by the CPU. Instead, data accessed from secondary memory is first loaded into RAM and is then sent to the processor. Secondary Memory
- 12. CD – COMPACT DISK DVD – DIGITAL VERSATILE DISC – DIGITAL VIDEO DISC
- 13. Prepared By Qureshi (ES-12) KaimKhani (ES-16) Rana (ES-62)