From the beginning of the personal computer (PC) people need external storage media. Below we discuss the beginning of the external memory (disks) to existing technologies. At the beginning of the PC, there were only floppy disk drives, the 5 1 / 4 “were wide. The operating system and applications needed to be loaded into the disk, only the computer to run in the early 1980s. The hard disk of the computer allows the applications be loaded into the computer without a floppy drive. During this time, people could store their information on those disks and keep it off-line are loaded into the computer later.

The original 5 4.1 “floppy disks instead of 160KB (kilobytes) of data, but improved rapidly to 360KB. To put into perspective this is 1KB about half a page of text. Floppy drives have been pursuing from a vinyl record in what is where the data was stored. 5 1 / 4 “disc is 1.2 MB (megabytes) limits, but still contained in the disk fragile was the subject of environmental contamination. The format of the next was going to be 3 1 / 2 “floppy disks. These were not only smaller, but they had a plastic casing to protect it. Although she started only 720 KB are organizing to data, they were soon in should be capable to 1.44MB of data, and were much easier to save in the cases and off-site. In the late 1980s, the 5 1 / 4 “floppy disks replaced by 3 1 / 2 were” format.

During the same period in the 1980s, is the internal hard drive to a standard PC. There are clear differences between the hard-disk space (think library of information) and memory (RAM – Random Access Memory) and the floppy drive (used to carry information). Hard disks have a 5 1 / 4 size 5 MB “Memory (MB) of data began in constant growth in the 1980s to the disc Quantum 1.28GB. To put it in the right light is about 1 GB 250 MP3 songs. Unlike floppy disks, hard disks were installed in the computer. Hard disks continue to shrink form factor up to 3 1 / 2 growth “in the 1990s. These drives are called half-height drives. In the 1990 drives were quickly growing from around 40 GB (gigabytes) of total memory all the way up to 3TB today (terabyte) drives.

Hard drives continue to shrink with the standardization of notebook models 2 1 / 2 form factor. “Disk drives in an external housing, while about a technical for some time in the consumer market in standard formats such as USB (Universal Serial Bus) was, FireWire and SATA (Serial AT Attachment), although the year 2000 allows. These new formats these must be quite portable speakers with a standard interface (like USB) to connect to another system without pain. USB socket allows more generic and the game is to allow the system to disk, once identified, how to . connect There are some fields on the market that can accommodate multiple hard adrives and be able to RAID (redundant array of independent disks) capabilities. RAID offers the option to either mirror your data from one disk to another or elongation (strip ), the data on the disk you have. What this offer is a failsafe in the event of loss of a hard disk, because the failure of the computer will not notice any difference in access to take your data on the hard disk of other players. » Read more: A Brief History of External Storage Devices – From the Floppy Disk to the Hard Drive

In this short article I will explain the ports of the computer database that you can see the back of the computer for connecting peripherals. If you’re new to computers and do not feel comfortable with the hardware in your computer, I would say: It’s so easy to build your own computer or to communicate that not even a 10 year old could do (with the appropriate command of course).

Ok, we here some of the most important ports in basic computer skills that you found on your computer.

PS2 serial ports

That is the good old days, a keyboard and mouse into your system. You can always find mice and keyboards very cheap use of these ports. In my opinion, if you can port, then do so, PS2 serial ports require no drivers to work and to care for your USB ports for other devices. » Read more: Basic Computer Ports and How to Connect Peripherals

When it comes to people with low vision to navigate on the computer and, more importantly, surf the Internet, there are essentially two solutions to monitor the increase on the PC screen available, and the optical magnifier software solution.

In this article we will quickly go into more detail about the advantages and disadvantages of each, optics and software solution for computer screen magnifier. Read, you can decide which of the work on computer screen magnifiers best for you.

Optical magnifier screen

The advantages of the computer screen magnifier in the first place, it is not dependent on electronics, it will immediately increase the screen at any time, without surprise and without error. When setting the screen magnification optical apparatus such as the Fresnel lens, you can leave it there and it is reliably screen magnification to produce for you. It will also increase the viewing angle for the entire screen at once, something that can not be used. This means that, while positioning your head, or the direction of the frosting, you can immediately get information from anywhere on the screen. This is something that no software solution can offer. » Read more: How To Magnify PC Screen – Monitor Magnifier Software Vs Optical Solution