Monthly Archives: June 2011

What is the difference between laptop and netbook?

So what is the difference between laptop and netbook? A laptop (also known as a laptop) is the team that was designed to be portable with a screen hinged to a keyboard. A laptop includes a battery and a touch screen laptop instead of a mouse for input.

Mini-notebooks (aka netbooks, ultraportables or subnotebook) take these ideas, by creating a new market above handheld computers, smart phones and PDAs. The main feature of these smaller size and weight, which are very similar to the average daily and costing less than a standard laptop with prices starting at around 150 pounds, an excellent solution in the credit crunch!

Mini-notebooks are not as powerful as bigger notebook computers, and have no power to large programs, demanding, and an optical drive – so no CD or DVD. However, connectivity is a central point for netbooks. Internet downloads are quickly catching up on hard media products, so it may not be a loss.

In summary, the difference between laptop and netbook is a netbook is smaller, lighter, cheaper (in total) and simpler.

New mini-notebooks are expected to sell in the region of 5.2 million units by the end of 2008, 8 million in 2009 to 50 million in 2012 – a tenfold increase. Industry analysts are debating whether subnotebooks will cannibalize the notebook market, and some suggested that a market share of 10% will be taken. However, in this economic downturn, people will always seek cheaper products and mini-laptops available from £ 150 to 200, maybe there is a large market, after all.

The best graphic design team

From the desktop publishing (DTP) was released in the eighties, graphic designers have been using computer technology. This led the designers to become proficient with the computer hardware at least.

What is desktop publishing (DTP)? In the 1980s, was a common term applied to digital publishing systems. These systems have been developed to replace large, pre-press, specialist in the design and composition of the systems.

Graphic designers rely heavily on computers whether they are compatible with Windows PC or Apple Mac. Whichever team chooses to use a graphic designer, he / she chooses the best team he / she can buy. Graphic designers rarely choose the cheap hardware.

Back in the four Macs were the only option for the design and printing. Almost all software design and graphic design has been developed only for Mac, or even if the software could be used in Microsoft Windows PC, which was much more reliable on a Mac. In addition, at that time, Macs have been associated with various technologies used in the prepress and Windows PC was simply not a practical option. Today, modern versions of Mac OS X and Windows allows designers to use design software, either a Mac or PC – no longer have to choose one over the other.

How to install a digital TV converter box in your RV

I recently asked the question. You must install a digital converter box in my motorhome. Is it going to the TV or connect to the video distribution center box that allows me to change my satellite TV / cable or antenna?

Answer: Here is the information you need to install a digital TV converter box in your RV

What you should do before installing

If you have determined that the TVs in your RV have digital tuners, so you will need a Digital TV Converter Box and a greater length of cable (cable length depends on the TV will be out of DTV converter box) for each TV. If you have a video player that does not have a digital TV tuner, then you will need a converter and an additional length of cable also (see below).

After the purchase of converter boxes, make sure they understand the choice of an intermediate analog VGA. Through the analog VGA analog signals can pass through the converter digital TV signal when turned off. If you are hanging from a cable to a trailer park, or if you want to watch a video or DVD of the converter box should be off (unplugged) to the analog signal pass through the converter on the TV.

If you do not get a digital converter box with analog VGA pass, you must install the A / B and, basically, that the creation of an installation nightmare for you.

Hubs, routers and switches – What is the difference?

The backbone of a computer network uses three types of network devices of the computer – hubs, switches and routers. Each is important and plays a different role to facilitate communication between networked computers. From the outside, these devices may seem – small metal boxes with various connectors or ports on the Ethernet cables are connected (routers also can expose other types of connectors). “Hub” The terms “change” and “router” are used interchangeably and bad – in fact, the devices are very different. The hubs are used to connect individual computers only. Switches do the same (but more effective). However, routers interconnect different networks (as opposed to individual machines).

Network Hub:

Compared with the switches and routers, hubs are inexpensive devices, simple network. All data that enters a port on the hub is sent to all other ports. Therefore, all computers connected to the same central communications network to be seen. The center does not pay attention to the data transmitted, simply pass along her other ports. The value of a hub is that it is inexpensive and offers a quick and easy way to connect computers on a small network.

Network Switch:

The job of a switch is similar to a center – but it does so more efficiently. Each data packet (Ethernet frame) that is transmitted through the network has a source address and destination MAC. A switch has the ability to remember the address of each computer connected to its ports and act as a traffic cop – pass the data transmitted to the target machine and not the others. This can have a significant positive effect on network performance by eliminating unnecessary transmissions and free bandwidth on the network. A switch can be seen as the centerpiece of a single network. It is used to interconnect devices on the network to provide layer 2 (OSI model) frames. A switch is a hub, and that transmits images to all other devices – rather, a switch allows direct connection between the transmitter and receiver devices.

LAN Design and hierarchical network model

CCNA focuses on the networks for SMEs (small, medium).
A hierarchical model is recommended.
Easier to manage and develop.
Problems are solved faster.

Hierarchical approach divides the network into three layers.
Central (CL).
Distribrution (DL).
Access (AL).

Each layer provides specific functions.
This “modular” provides the scalability and performance.

Access Layer (AL): less

Interfaces with the terminal (the user).
Includes routers, switches, bridges, schools and wireless access points.
Provides a means of connecting devices to the network and control to be contacted on the network.

The distribution layer (DL):

Aggregates the data received from the American League before sending to CL for routing.
The traffic control policies and delineates broadcast domains with VLANs defined in the American League.
VLANs enable segmentation of traffic (separate subnets).
DL switches are generally high-performance devices with high availability and redundancy to ensure reliability.