Evolucion de los dispositivos de alamcenamiento

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Evolution of storage devices
A storage device is any computational tool that is capable of storing data or information. Historically we have used the role as the most common, but now can be stored digitally on a CD for example, data that would fit into thousands of archived folders. Throughout history we have sought the path to finding the physically smaller and with more capacity to store moredata and treat them quickly.
Also known as integrated circuit. It first developed in 1958 by engineer Jack Kilby just months after being hired by the company Texas Instruments. It was a device that integrates six germanium transistors on a single semiconductor base to form a phase shift oscillator. In 2000, Kilby won the Nobel Prize in Physics for his invention's contribution to thedevelopment of information technology.
A microchip is a very thin pad where there are thousands or millions of interconnected electronic devices, mostly diodes and transistors and passive components such as resistance or capacitors. Your area may be of 1cm2 or less. The microchips are perhaps the most widely used storage systems, today also used in computers, in mobile phones, appliances, toyswith some electronic component, and so on.
The transistor acts as a switch. You can turn on and off electronically or amplify current. It is used to store information in computers or amplifiers to increase the sound volume. The resistors limit the flow of electricity and allow us to control the amount of current flowing, this is used for example to control the volume of a TV or radio.
Thedevelopment of the microchip is especially important in history, it is incredibly small that it can store immense amounts of data, which years ago was unthinkable. It takes a microscopic level development to design microchips.
The first computer I use an IBM microchips was launched in 1965, called number 360. These computers are considered the third generation of computers, and completely replacedthe second generation, introducing a way of programming that still exists in the IBM mainframe.
RAM (Random Access Memory)
Random Access Memory, or RAM (English acronym for Random Access Memory) is a semiconductor memory, which can both read and write information. It is a volatile memory, ie loses its contents when disconnected from the electricity.
The RAM is the most important storagecomponent of a current computer, next to the hard drive. With the advent of desktop computers, had to devise a system that does not occupy storage space, for desktop computers were designed for a table would fit in office. RAM is formed from microchips with memory entries. Memory is stored in those entries at random, hence the name. RAM is one of the computer components that has evolved over the pasttwenty years. If the late 80's the RAM capacity of around 4 MB, it is normal now buy a computer with at least 1024 MB (1GB). Usually has progressed in a number of MB equal to powers of 2. In the mid-90s, with the arrival of Windows 95, began using computers memory 16 MB of RAM, then 32, 64, 128 ... to the Pentium IV and using Windows XP, which recommends at least 256MB of RAM, although today it isusual to use 1 gigabyte or more.
Hard Drive
The hard drives used in desktop computers, laptops and storage units handling more complex (eg CLARiiON). The hard drive is the component that is responsible for storing all the data we want. While RAM memory serving as "support" (as a variable that stores and lose information as they process data), the hard disk permanently stored information that weput until it is deleted. Generally, the first recording to hard disk is the OS that we use in our computer. Once you have installed the operating system on your hard disk, you can use any programs you want to have installed, and all the information you want to save is stored on the hard disk. The hard drive stores all kinds, including documents, images, sound, software, videos, files.
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