Backing storage Edit
Backing storage is any device that stores data, most common types of storage are hard drives, CD’s, DVD’s, USB sticks and cloud storage. All these can store or transfer data to and from other computers or to other devices that can read the format they are in. the new and upcoming type of storage is cloud storage because every major computing company is making cloud storage available like Google, Windows, Apple and Syncplicity and it is reliable but can have its faults and sometimes can go down but more than likely you will not lose any of the data you have saved just you will not be able to access the information while it is done unlike the other types of storage where you have a physical copy of the data and you can keep it with you all the time.
Hard disc drive (HDD) Edit
The hard disk drive is a magnetic storage device in computers that stored all the data in them, the sizes can range from 250GB – 4TB, it reads and writes on a disk that is in the HDD case. They can find something on the hard drive in usually 12 milliseconds this is called seek time. There are many different manufacturers now like, Samsung, SanDisk, Seagate, Toshiba, Maxtor, and western digital.
One of the first HDD was called the Winchester drives and was named by a guy called Winchester for the company IBM in 1973.
You can now get portable HDD to take all the work you need with you with no problem they can range from 250GB-2TB at the moment but the technology is getting better so the size will increase in time.
RAM (random access memory) Edit
Random access memory is a type of memory that can be accessed randomly, ram is most common in computers, smartphones, and tablets. The more ram you have to more applications you can have up at once because the ram holds the data until you save the work and if you don’t save your work and your computer dies the ram is able to hold the information until you start it back up again.
Memory types Edit
There are five types of ram that come with PCs now and they are:
DDR was the first in its series to replace the former SDRAM in 2002 and they needed a 184-pin socket on the motherboard for you to use them, they do come in different speeds. For example, PC2100, PC2700, PC3200, and PC4000. They can be used individually but you cannot uses different speeds together.
DDR2 uses 240-pins and this just builds on the DDR technology, and they were designed to run faster while using less power therefore being more efficient. To uses DDR2 memory you will need a RAM socket that can hold a 240-ping stick of ram this is also available in different speeds and they are PC2-3200 (DDR2400), PC2-4200(DDR2533), and PC2-5300(DDR-667). With this ram unlike the DDR you can uses different speeds together and or can be used singly.
The DDR3 uses 240 pins like the DDR2 this is widely used in the 2008-2014 taking over DDR and DDR2, because they use the same 240 pin as the DDR2 they put the notch in the stick of ram in another place so you did not install the wrong ram also to use DDR3 the chipset on the motherboard much be DDR3 enabled for the ram to work. This works at different speeds too which are pc3-6400 = 800MHz - pc3-8500 = 1066MHz - pc3-10600 = 1333MHz - pc3-12800 = 1600MHz.
The DDR4 ram starting appearing in 2014 and this has a 50% better bandwidth, lower voltage and runs 40% more energy efficient than DDR3, the DDR4 memory has a 288 pin design so you will need a motherboard that is capable of holding the DDR4 ram. The speed of DDR4 are PC4-21300 (2666Mhz) - PC4-22400 (28000Mhz) PC4-19200 (2400Mhz) - PC4-24000 (3000MHz) - PC4-17000 (2133 MHZ) - PC4-25600 (3200MHz) - PC4-26400 (3300MHz).