yes, external memory counts as portable/External Hard drives, USB flash sticks/drives, SD cards, CD's/DVD's and floppy disks (ancient but still count :P). Anything that you can put files,pictures, movies, etc on counts as external memory.
secondary memories are the memories by which CPU proccesses his programs and application.
Four types fo removal memory devices would be external hard drives, USB memory drives (flash drives), memory cards, and DVDs or CDs. Which of these devices you would choose to use would depend on your individual needs.
On the My Memory UK website you can buy electronics. They sell digital cameras, mobile phone accessories, USB flash drives, SD cards and external hard drives.
Definitely an External hard disk is better than the flash memory because of it's stability.
No. Unlike hard drives, flash memory doesn't write data, it virtually stores it
Solid state Flash drives USB Hard disks drives
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It's very likely flash memory or another form of it (with no moving parts, unlike hard drives) will replace hard drives in the future, with advancements in memory capacities and decreasing costs. The aspect of no moving parts allows greater portability, endurance to movement (that's why your iPod nano has a flash memory) and no 'mechanical failures'. However, flash memory at the moment (as flash drives) is up against a wall in the area of memory. This might be overcome with 'sideways' development' or another form of better, non-mechanical memory.
the answer's in the question - cheaper means cheapsee related link
Internal Media: Internal media means memory inside the computer like the hard drive and RAM. External Media: External media means removable media like CDs, DVDs and flash drives, which are outside the computer.
Solid state drives are drives that run off of flash memory rather than a hard disk.