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internal memory: In a computer, all of the storage spaces that are accessible by a processor without the use of the computer input-output channels. Note: Internal memory usually includes several types of storage, such as main storage, cache memory, and special registers, all of which can be directly accessed by the processor. Synonym internal storage.
Answer:
1.Memory is internal storage areas in the computer system. The term memory identifies data storage that comes in the form of chips , and the word storage is used for memory that exists on tapes or disks.
It's types are ::
1) RAM (random-access memory) ;
2) ROM (read-only memory);
3) PROM (programmable read-only memory);
4) EPROM (erasable programmable read-only memory);
5 ) EEPROM (electrically erasable programmable read-only memory):
2.It is in the below picture.
3.Typically refers to main memory (RAM), but may also refer to ROM and flash memory. In either case, internal memory generally refers to chips rather than disks or tapes. Some vendors call their disk drives "memory products," which only adds to the confusion. In this encyclopedia, "memory" always refers to RAM, the internal workspace of the computer, which loses its content when power is turned off (at least until MRAM, phase change memory or some other non-volatile technology reigns supreme). "Storage" refers to disks and tapes.
4.1) Synchronize your data between computers: Synchronizing the data between computers is a smart technique to have the same data format in two or more devices.
“For instance, you have a home computer and also other computers at the workplace or office than the number of files and any modification in the files can be kept constantly updated in between all these devices by using free synchronizing software. But for this, you will need an external memory device like hard disks for the purpose.
2) Back-up important project data: If you are working on an important project using a computer or doing your research like Ph.D. or writing a paper etc, it is safe to have a back up of your entire work on an external hard disk. It is also advisable to write-up a DVD or CD if the data is small.Hard Disk
An external hard disk can also serve to back up your personal computer if the memory of disk is sufficient.
3) Install software for personal use: If you have some software that you like to use on a personal basis at home or at an office computer or at a public place then the external hard disk is a good option.
The tip is to connect the hard disk to the computer where you intend to use the software. Then install the software such that its installation folder lies in the hard disk and not on the computer. Then after installation, you can open the software by clicking the shortcut on the desktop or the start menu. When you disconnect your hard drive, others can’t open the software as the installation folder is in the hard drive with you.
4) Carry data easily: If you are working on computers regularly both at the workplace and home then the data carriage can be easy with the external hard drive. You can avoid carrying the heavy laptops for the purpose. Further, the data transfer rates are very fast unlike flash drives so you can work without inconvenience.
5) Extra memory (Storage of extra data): Nowadays we have a huge amount of data of interest like video/audio files (old & favorite movies, songs), games, software, etc. Though we have personal desktops or laptops with a good amount of memory still the memory seems to be insufficient.
Further many of us started using i-pads, i-phones, tablets due to low weight and ease of carrying. Yet these devices don’t have sufficient memory and hard disks can be handy to serve the purpose as they are also small and compact for easy carry along with them.
5.A CD works by focusing a 780 nanometer wavelength semiconductor laser onto a single track of the disc. As the disc rotates, the laser beam measures differences in the way light is reflected off the polycarbonate layer on the bottom of the disc, converting it to sound.
CDs are fragile and prone to scratches; they can be repaired, but disc readability may be affected.
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