What Does A Modem Do?

Modem and router are two different networking hardware equipments. Modem is a modulation device, that is, a modem can modulate and demodulate data. We know that data can be either analog or digital. In computer networking, the data to be used in the computer needs to be digital but the data that is used in the networking can be analog.

For example, while connecting to the Internet by using a telephone line, the data in the networking process, that is, the data from the telephone line are analog. Now, the analog data needs to be converted to digital for processing in computer and digital data needs to be converted to analog to send from computer via the telephone line again. This conversation is the modulation and demodulation processes and the job of modem is basically to convert analog data to digital and digital data to analog.

The job of router, however, is quite different. A router does not change one kind of data to another kind. It simply forwards the data. Router works on a group of data, which are normally called as packets, and forwards the packets across the network.

By: Eric

Historical Development of Computer Monitors

Monitor is the most important interfaces that connect people and PC. At the time of the first computer to operate in 1938, the monitor was 83 years old. Its development is ongoing to this day.

History Monitor
Stage of development of Computer Monitors in use today is actually divided into two phases. The first phase in 1855 was marked by the discovery of cathode ray tube by scientists from Germany, Heinrich Geissler. He is the father of the monitor tube. Then, 33 years later, the Austrian chemist, Friedrich Reinitzer, laying the basis for developing LCD technology with discovered liquid crystals. Tube technology since it was originally developed to realize the monitor. However, the liquid crystals is still a chemical phenomenon during the next 80 years. At that time, the display frame rate or even yet thought of.

During this time, many thought that Karl Ferdinand Braun as the inventor of the cathode ray tube. Actually, he is the maker of the first applications for the tube, ie the oscilloscope in 1897. The device that is the basis for the development of other devices, such as television or radar screen. In the same year, Joseph John Thomson discovered the electron, which accelerates the development of the tube technique.

The first CRT Monitor (Cathode Ray Tube) was developed to receive television broadcasts. Milestone was the first television tubes from Wladimir Kosma Zworykin (1929), electronic full frame rate of Manfred von Ardenne (1930), and the development of the first cathode ray tube that can be reproduced by Allen B. Du Mont (1931).

In earlier generations of computers, not to use a special monitor as it is today. Computer time was connected with the family as a TV viewer screen of data processing is done. That is quite a problem is that the resolution of the TV monitor when it is only capable of displaying 40 characters horizontally on the screen.

Special monitors for computers issued by the IBM PC, which initially has a resolution of 80 X 25 with color capability "green monochrome". This monitor is capable of displaying the results of a brighter, clearer and more stable.
In the next generation of emerging mono graphics (MGA / MDA) which has a 720x350. Furthermore, in the early 1980s came with a CGA type of monitor resolutions range from 160x200 to 640x200 and color capabilities between 2 to 16 colors. EGA monitor comes up with a better resolution of 640x350. Monitor type is fairly stable until the advent of next-generation Windows computers.

Mardika Gunawan
By: Mardika

Wide Format Printers

Wide-Format Printers or Large Format Printers are most commonly used by architectural and engineering company for their designs and lay-outs. There is a low demand of these printers not just because they are expensive and specialized printer but also it uses inks and toners that are specially formulated and need some printer accessories like cutter and laminator. It is important to know first before buying if you could afford its maintenance in the future. Since these are specially designed printers, so it is important to know the product support as you may need it in running the printer and its return policy just in case the printers are not working as it should be.
By: Daisy Gamboa

Basic Info About Laser Printers

A printer that uses a laser and the electrophotographic method to print a full page at a time. The laser "paints" a charged drum with light, to which toner is applied and then transferred onto paper (see electrophotographic for more details). Desktop laser printers use cut sheets like a copy machine. Large printers may use paper rolls that are cut after printing.

Resolution and Features

Laser printer resolution is typically from 300 to 1200 dpi, but specialty printers can reach imagesetter resolution of 2400 dpi. Options such as duplex printing (both sides) as well as collation, stapling and 3-hole punching may be available.

Small, Medium and Large

Low-end laser printers print in the 4 to 8 ppm range, while typical office workgroup units print 17 to 32 ppm. Midrange units print in the 40-60 ppm range, with a large jump to high-end printers that print from 150 to more than 1,000 ppm.

Color

Color lasers are slower than their monochrome counterparts, typically in the 4 to 10 ppm range. At the other end of the spectrum, high-end "digital printing presses" can print 70 or more duplexed color pages per minute, producing finished booklets and manuals. See color laser printer and digital printing.

Laser-Class

There are several technologies that fall into the laser category, but do not actually use a laser. LED printers use an array of LEDs to beam the image onto the drum, and electron beam imaging (ion deposition) creates the image with electricity rather than light. Solid ink printers propel a waxlike ink onto the drum.

History

In 1975, IBM introduced the first laser printer, the model 3800. Later, Siemens came out with the ND 2 and Xerox with the 9700. These self-contained printing presses were online to a mainframe or offline, accepting print image data on tape or disk.

In 1984, HP introduced the LaserJet, the first desktop laser printer, which rapidly became a huge success and a major part of the company's business. Desktop lasers made the clackety daisy wheel printers obsolete, but not dot matrix printers, which are still widely used for labels and multipart forms.
By: Sharif

Three Common Types of Laminators & Laminate Film

Lamination was invented by Dr. Morris M. Blum, DDS, a dentist in 1938 and dental laminate was the inspiration for the first lamination of a photograph. The three common types of laminators are pouch laminators, laminators and cold roll laminators.

Laminate film is generally categorized into standard thermal laminating films, low-temperature thermal laminating films, heat set (or heat-assisted) laminating films, pressure-sensitive films, and liquid laminate.

When using a laminating machine it is important to follow the instructions that comes with each machine. When laminating it is key to start from one end of the document and press slowly the sticky sheet and document together. And be careful about use something that will not accidentally cut through the plastic.

Feel free to go longer by using our web server , We provide these computer products

A web server provides information and services to web surfers. So when someone access www.pinnaclemicro.com he/she is accessing a web server from their computer.
When you choose a web server you must consider the following things:
* Competitive prices (but not too competitive what you pay for)
* Good reputation: look for awards and genuine testimonials.
* 7/24 email and telephone support
* adequate security measures
* appropriate operating system (NT/Windows 2000, Linux, Unix)
* Adequate disk space, with the opportunity to add more
* Sufficient bandwidth, with affordable increases
* Online help: tutorial, manuals, control panel
* Regular site backup, preferably daily.
Hope You will consider these things to choose a web server . Feel free to choose our products as we maintain these criteria
(Mohammad Alamin [a15e4ab2] BD)
By: Mohammad Alamin

Tips To Prolong Your Barcode Printers Printhead

The most common printer replacement part is the printhead itself. It can also be the most costly. Here are some reasons why the printhead wears out and what you can do to help slow down that process.

What is a printhead and what does it do? In a barcode printer, a printhead is the device that creates the image on the face of your label or tag. It heats small resistor elements known as dots by applying an electrical current. The heat from the dots is then transferred to either the direct thermal media or thermal transfer ribbon. This produces your text, image, or barcode.

Printheads will eventually wear out. When the dots are heated and cooled rapidly, friction will occur as the media passes against the printhead. During the life of the printhead, the dots may stop heating which will cause the output to become lighter and ultimately effect print quality.

Here are some simple steps to prolong your printheads life:

* Read your printer’s user manual, and clean the print head as described regularly. Having a dirty print head will diminish your optimal output and built up residue from the printing process causing uneven heating of the dots.
* Use the paper and media type that your printer’s user manual recommends. You can cause mechanical and thermal wear on your printhead by using the wrong type of media.
* Adjust your printer to the lowest print speed setting that allows for acceptable print quality. By doing so, it will help reduce the mechanical wear on your printhead.
* Try to have your printer in a setting that is room temperature. If the temperature is lower it will require more energy to heat the dots to produce the print, this excessive heating and cooling will shorten the lifespan of a printhead.

Wide Format Printers

Wide-Format Printers or Large Format Printers are most commonly used by architectural and engineering company for their designs and lay-outs. There is a low demand of these printers not just because they are expensive and specialized printer but also it uses inks and toners that are specially formulated and need some printer accessories like cutter and laminator. It is important to know first before buying if you could afford its maintenance in the future. Since these are specially designed printers, so it is important to know the product support as you may need it in running the printer and its return policy just in case the printers are not working as it should be.
By: Daisy Gamboa

HP Multifunction Printer Brand Is The One To Buy

If you are looking for a multifunction printer you'll find many kinds and many different brands  like:

HP Hewlett Packard
Lexmark
IBM
Okidata
Epson America
Canon
Infoprint
Xerox

One of these brands to look at to buy is HP Hewlett Packard. Why HP? Because HP is known for their quality and tech support on a worldwide basis. They are located in more than 170 countries around the world.

A popular HP model to consider is the HP M3027  MFP LaserJet Multifunction Printer CB416A. It provides positive results when you move print, copy, fax, color scan and email. Doing all this in one compact, desktop device. This highly reliable MFP is easy-to-use, set-up and manage and offers a familiar LaserJet like user experience.

The HP M3027 Multifunction Printer



is designed for small work teams in SMB environments who will appreciate this very reliable, simple-to-operate black-and-white MFP that enables them to do more with less as they perform multiple office tasks from a single device.

So benefit from consolidated print, copy, analogue fax and colour scanning functionality. Print double-sided documents with a two-sided printing unit. Send-to-e-mail directly from your MFP, which also maintains a simple address book and PIN authentication for security.

Basic Info About Laser Printers

A printer that uses a laser and the electrophotographic method to print a full page at a time. The laser "paints" a charged drum with light, to which toner is applied and then transferred onto paper (see electrophotographic for more details). Desktop laser printers use cut sheets like a copy machine. Large printers may use paper rolls that are cut after printing.

Resolution and Features

Laser printer resolution is typically from 300 to 1200 dpi, but specialty printers can reach imagesetter resolution of 2400 dpi. Options such as duplex printing (both sides) as well as collation, stapling and 3-hole punching may be available.

Small, Medium and Large

Low-end laser printers print in the 4 to 8 ppm range, while typical office workgroup units print 17 to 32 ppm. Midrange units print in the 40-60 ppm range, with a large jump to high-end printers that print from 150 to more than 1,000 ppm.

Color

Color lasers are slower than their monochrome counterparts, typically in the 4 to 10 ppm range. At the other end of the spectrum, high-end "digital printing presses" can print 70 or more duplexed color pages per minute, producing finished booklets and manuals. See color laser printer and digital printing.

Laser-Class

There are several technologies that fall into the laser category, but do not actually use a laser. LED printers use an array of LEDs to beam the image onto the drum, and electron beam imaging (ion deposition) creates the image with electricity rather than light. Solid ink printers propel a waxlike ink onto the drum.

History

In 1975, IBM introduced the first laser printer, the model 3800. Later, Siemens came out with the ND 2 and Xerox with the 9700. These self-contained printing presses were online to a mainframe or offline, accepting print image data on tape or disk.

In 1984, HP introduced the LaserJet, the first desktop laser printer, which rapidly became a huge success and a major part of the company's business. Desktop lasers made the clackety daisy wheel printers obsolete, but not dot matrix printers, which are still widely used for labels and multipart forms.
By: Sharif