Memory, Storage Devices And Media

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Read Only Memory (ROM)

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ROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.

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Random Access Memory (RAM)

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RAM is a fast temporary type of memory in which programs, applications and data are stored.

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DVD RAM

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DVD-RAM is a DVD (optical disc) technology for high-capacity data storage for computers. Like ordinary random access memory (RAM), it can be repeatedly read, written to, and erased.

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hard disk drive (HDD)

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A hard disk is a circular metal disk coated with magnetic material and usually sealed in a hard disk drive inside the computer.

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Solid State Drives (SSDs)

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A solid-state drive (SSD)is a data storage device using integrated circuit assemblies as memory to store data persistently.

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Digital Versatile Disks (DVDs)

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DVD is the latest way of storing data. DVD discs are expected to replace ordinary compact discs and video tapes in the future. A DVD disc can store up to 17 gigabytes of data.

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Compact Disks (CDs)

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Compact disc (CD) is a digital optical disc data storage format. Compact disks are known as optical storage devices.

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Blu-ray

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Blu-ray Disc (BD) is a digital optical disc data storage format designed to supersede the DVD format, in that it is capable of storing high-definition video resolution (1080p).

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USB flash memory and removable disks

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A memory stick is 'pen top' sized USB device, it is inserted into the USB port.
A memory card is a stamp-sized USB device, and it is inserted into either a memory card reader or a USB converter im azswees