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GROUP 4 PRESENTATION 8-ISAIAH

Understanding Computer Memory Computer memory is a common term for all the various forms of data storage technology, a device that can use including RAM, ROM, and flash memory.

Random Access Memory (RAM) Alternatively referred to as main memory, primary memory, or program memory, RAM (random access memory) is a hardware device that enables the

storing and retrieval of information on a computer but since it’s a

volatile type, it

forgets everything when computer turned- off.

Types of RAM

• DRAM: DRAM stands for Dynamic RAM and it is the most commonly used type of RAM in computers. The oldest form is known as Single Data Rate (SDR) DRAM but modern computers use Dual Data Rate (DDR) DRAM more rapidly.

TYPES OF RAM Dual In-Line Package (DIP) RAMBus Inline Memory Module (RIMM) Single Inline Memory Module (SIMM) Dual Inline Memory Module (DIMM)

Read Only Memory (ROM) ROM is a non-volatile type of memory, which means any data stored will stay even there no power or computer is off. It is same as secondary memory where it is used for long term storage.

Solid State Storage

• composed of silicon microchips where it can be written to and overwritten like RAM. However, unlike RAM, it is non-volatile retain its content even the computer is switched off.

Solid State Storage Solid-State Drives Multi-Media card USB Flash Drives Secure Digital

Magnetic Storage Devices like floppy disks, tape recorder cassettes and hard disks uses magnetic storage technology where inside have round platters composed of metal oxide material which rotates around the spindle in a high speed.

Types of Drive Interfaces Manufactured Hard drives and optical drives are made with a variety of interfaces that made it differ in each connection with computers.

■ Enhanced Integrated Drive Electronics (EIDE), also known as ATA-2, is an updated version of the IDE drive controller interface. EIDE supports hard drives larger than 512 MB, enables Direct Memory Access (DMA) for speed, and uses the AT Attachment Packet Interface (ATAPI) to accommodate optical drives and tape drives on the EIDE bus. An EIDE interface uses a 40-pin connector.

■ Parallel ATA (PATA) refers to ATA drive controller interface's parallel version. ■ Serial ATA (SATA) refers to the seven-pin connector serial version of the ATA drive controller interface.

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