May 24, 2013

Micro Computers

A Cray-2 supercomputer at the Musée des Arts e...
Image via Wikipedia

Micro computers, so small that they fit into the palm of your hand,well, almost. They save about 45% of desktop space, but at the same time provide close to 95% of the performance of a regular PC. They do not weigh much and they are suited for desktop computer users that want to be on the go, but do not like the laptop compact keyboard, and limited performance. The funny thing is that these small computers weigh less than most laptops (especially the old dinosaurs), can fit into a briefcase (as long as you do not plan to carry much else), and provide quick hook up for point-to-point mobility. Many of these units can provide most of the same capabilities as a normal tower PC system along with many of the sophisticated operations. One of the clues to how these little guys can perform so well is, of course, miniaturization, but more importantly, they are most often “made to order”. This means they have been created with the exact specifications aligned directly to the purchaser’s needs and none of the “stuff”or “fluff” that would not help to achieve the goals of the user. Which are both good ideas – but also expensive.

Some manufactures claim to have the “smallest computers in the world.” We all know what they mean is the smallest available to the consumer- there are a lot smaller computers, but they are not available (at least at this point) to the consumer. These really small computers are on work benches all across the world and in research labs and in government usage. The smallest size commercially available is about 6.5 x 6.5 x 2.0 inches. That is pretty impressive and as you may remember, about the size of a DVD burner drive! The small size gives more room for a monitor and/or a printer on the top of your desk.

So, pack it in the brief case along with a few cables and a folding keyboard and borrow a monitor when you get to where you are going and you are all set!

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Different Types of Computers

A Cray-2 supercomputer at the Musée des Arts e...
Image via Wikipedia

The most used electronic device which most cannot go without even for a day is the computer. It is one of the most luxurious inventions of human civilization. It provides many advantages to mankind in their day to day life. Computers are doing critical jobs within a second with 100% accuracy. With the advancement of technology, computers are now available in different shapes and sizes depending on the demand. The computers which are being used nowadays are quite different from the computers used in the early years.

Computers can be of various types depending on the size of the components and the processing powers. On the basis of the operational principles computers can be divided into two categories, such as analog computers and hybrid computers.
Analog computers are almost at the verge of extinction today. This type of computer can perform several mathematical computations at a time. Analog computers use continuous variables to solve mathematical operations and use electrical and mechanical energy. However, hybrid computers are a combination of both analog and digital computers. Hybrid computers converse the analog signals to digital ones by using the digital segments.

Apart from these two types, there are other important types of computers such as mainframe computers, microcomputers, desktops, laptops, PDAs, minicomputers, super computers and so on. Mainframe computers are used for ERP and bulk data processing. Usually large organizations use this type of computers. Mainframes can host multiple operating systems and control them as a number of virtual machines. So, the mainframe computers can be used as an alternative of several small servers.
Microcomputers are computers which have a microprocessor. With an addition of a keyboard and a mouse this computer can be called a personal computer. Desktops, laptops and PDAs are varieties of personal computers.
Desktops are a type of personal computer which is intended to be used in a single location. These are usually popular and convenient for using in households and workplaces. Laptop computers are miniatures of desktops and can be carried anywhere. PDAs are also known as palmtop, which is even a more mini version of laptop.

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