COMPUTER-MEMORY-TLE-GRADE-8-HIGH-SCHOOL pptx

for learning about computer memory

1. Computer Memory

2. It is a faculty of the brain by which data or information is encoded, stored and retrieved when needed. It is any physical device capable of storing information temporarily, like RAM, or permanently, like ROM. Computer Memory

3. Why is memory important or needed for a computer? Memory provides fast access to data that the CPU needs to execute tasks, enabling the system to run programs and processes efficiently.

4. Types of Computer Memory Cache Memory Primary Memory/Main Memory Secondary Memory

5. 1. Prim ary Memory Primary memory also known as “ M ain M emory” or “ I nternal M emory ” which is lo cated in the mother board system directly connected to the CPU. Two types: RAM (Random Access Memory) ROM (Read Only Memory) TYPES OF COMPUTER MEMORY

6. 1. RAM (R andom A ccess M emo ry ) is the temporary storage for data and programs that are being accessed by the CPU. RAM needs power or electricity to work when the computer power is turned off then all the dat a in it will be erased automatically. PRIMARY MEMORY

7. TWO TYPES OF RAM SRAM (Static RAM) DRAM (Dynamic RAM

8. TWO TYPES OF RAM A. SRAM ( Static RAM ) The word “ static ” ref ers that the memory retains its contents as long as the powe r is supplied , that’s why it is volatile in nature . SRAM does not need to be ref reshed periodically . SRAM is faster but more exp ensive than DRAM .

9. TWO TYPES OF RAM B. DRAM ( Dynamic RAM ) It also contains data only when electrici ty is available. DRAM needs to refreshed periodically , due to this, D RAM works slower than SRAM. Mainly general PC uses this RAM because it is much cheaper than SRAM and requires less space.

10. Common Types of DDR-SDRAM (Double Data Rate-Synchronous DRAM) DDR (Release 1998) transfer data twice per clock cycle. 128MB -2 GB per module

11. Common Types of DRAM 2. DDR2 (Release 2003) 256MB to 4GB per module 3. DDR3 (Release 2007) 512MB or 16 GB per module

12. Common Types of DRAM 4. DDR4 (Release 2014) 5GB to 64 GB per module 5. DDR5 (Release 2020) with potential for 128 GB or more per module.

13. DIMM (Dual In-Line Memory Module) SO-DIMM (Small Outline Dual In-Line Memory Module

14. 2. ROM ( Read Only Memory ) It is a non-volatile memory that retains it’s data even when the power is turned off. This makes it ideal for storing critical system information such as BIOS ( Basic Input & Output System) that initializes a computer when it’s boots up. Mainly there are four types of ROM PRIMARY MEMORY

15. MROM (Mask R OM) The original form of ROM, where the data is written during manufacturing process. The data is FIXED and cannot be altered afterward. Invented in 1950. TYPES OF ROM

16. 2. PROM (P rogrammable R OM) This type of ROM can be programmed once by the user after manufacturing. Once written, the data cannot be changed. TYPES OF ROM

17. TYPES OF ROM

18. TYPES OF ROM

19. The place where we store our perso nal data in computer system is known as S econdary M emory . In this we store data so tha t when the data is needed w e can easily retrieve it. This is the fundamenta l component of comp. system SECONDARY MEMORY

20. 1. Magnetic Tape Magnetic tape ap pears similar to the tape used in music cassettes. I t is used to store music , movie , etc .

21. 2. Hard Dis c (Hard Drive or Fixed Drive) A type of storage device that uses spinning magnetic disks to read and write data, providing long-term storage of files, programs & operating system in computer and other devices. Hard disk comes fix in ou r system and if you require mor e hard disk then it comes in removable also .

22. 2. Hard Disk (Hard Drive or Fixed Drive)

23. 3. SOLID STATE DRIVE (SSD) is a type of data storage device that uses flash memory to store data. Unlike traditional hard disk drives (HDDs), SSDs have no moving parts, which offers several advantages in terms of speed, durability, and power consumption.

24. 2. SOLID STATE DRIVE (SSD)

25. 3. FLOPPY DISC Data storage medium widely used from late 1970’s through the 1990’s. It consists of thin, flexible disc enclosed in a square or rectangular plastic shell.

26. FLOPPY DISK

27. 4. Optical Dis c This is flat, circular, plastic dis c coated with material that uses laser technology to read and write data . It is very popular because of its small size and huge storag e capacity. T ypes of optical dis c : 1. CD 2. DVD 3. Blu-Ray Disc

28. 1. CD ( Compac t Dis c) U sed to store data, music , software , and others . it can store 80 minutes of continues video recording . The space of CD is up to 700 mb. To avail the services of CD your computer should have CD drive.

29. CD/DVD

30. 2. DVD ( Digital Versatile Di s c) It is high capacity storage medium . Mainly used to store movie , m usic, software , etc . the storage capacity of DVD is up to 4.7 GB . It looks similar to CD but due to its high storage capacity it is not cheap er as CD ..

31. DVD Disc

32. 3. Blu-ray Disc Provides even higher capacity with standard Blu-ray discs holding 25GB to 50GB. Commonly used for high-definition video and large data files.

33. Blu-ray Disc

34. FLASH DRIVE ( Thumb Drive) It is a p ortable storage device that uses flash memory to store and transfer data.

35. FLASH DRIVE