A barcode printer (or bar code printer) is a computer peripheral for printing barcode labels or tags that can be attached to physical objects. Barcode printers are commonly used to label cartons before shipment, or to label retail items with UPCs or EANs. You can read about bar code inventory labels if you want to gain more knowledge in this field.
The most common barcode printers employ one of two different printing technologies. Direct thermal printers use a printhead to generate heat that causes a chemical reaction in specially designed paper that turns the paper black. Thermal transfer printers also use heat, but instead of reacting the paper, the heat melts a waxy or resin substance on a ribbon that runs over the label or tag material. The heat transfers ink from the ribbon to the paper. Direct thermal printers are generally less expensive, but they produce labels that can become illegible if exposed to heat, direct sunlight, or chemical vapors.
April 1st, 2007
As the World Wide Web developed and browsers became more sophisticated, people started creating browser games that used a web browser as a client. Simple single player games were made that could be played using a web browser via HTML and HTML scripting technologies (most commonly JavaScript, ASP, PHP, and MySQL). More complicated games would contact a web server to allow a multiplayer gaming environment. Games such as online pool, or internet billiard are coming to the fore and are up there in demand for the online gamers.
The development of web-based graphics technologies such as Flash and Java allowed browser games to become more complex. These games, also known by their related technology as “Flash games” or “Java games”, became increasingly popular. Many games originally released in the 1980s, such as Pac-Man and Frogger, were recreated as games that could be played using the Flash plugin on a webpage. Most browser games have limited multiplayer play, often being single player games with a high score list shared amongst all players.
April 1st, 2007
The iPhone is a multimedia/Internet-enabled phone announced by Apple CEO Steve Jobs during the keynote address at the Macworld Conference & Expo on January 9, 2007. The iPhone has a scheduled US release date of June 2007, (later outside the US) and will be available from the Apple Store and from Cingular Wireless. iPhone has a planned launch price of US$499 for the 4 GB model and $599 for the 8 GB model, based on a two-year service contract. The iPhone has not even come out in the stores but already there are online stores lining up to sell accessory for Apple iPhone.
The iPhone’s functions include those of a camera phone, a multimedia player, mobile telephone, and Internet services like e-mail, text messaging, web browsing and wireless connectivity. iPhone input is accomplished via touchscreen with virtual keyboard and buttons. The iPhone is a quad-band GSM phone, though Jobs mentioned in his keynote that Apple has a “plan to make 3G phones” in the future. Apple has filed over 200 patents related to the technology behind the iPhone.
April 1st, 2007
In Wi-Fi Wireless LAN computer networking, a service set identifier (SSID) is a code attached to all packets on a wireless network to identify each packet as part of that network. The code is a case sensitive text string which consists of a maximum of 32 alphanumeric characters. All wireless devices attempting to communicate with each other must share the same SSID. Apart from identifying each packet, SSID also serves to uniquely identify a group of wireless network devices used in a given “Service Set”.
There are two major variants of the SSID.
* Ad-hoc wireless networks (IBSS) that consist of client machines without an access point use the IBSS ID (Independent Basic Service Set Identifier)
* Infrastructure networks which includes an access point (BSS or possibly an ESS) use the BSS ID or ESS ID (E for Extended) instead.
March 15th, 2007
Short review glimpse of the heavy duty M2010.
The good: Sleek, attention-getting design; high-quality, adjustable 20-inch LCD; speakers offer crisp, rich audio; detachable Bluetooth keyboard and Media Center remote will work well from the couch or during a presentation; top-of-the-line components deliver high overall performance and competent gaming capability.
The bad: Absurdly expensive; TV tuner and some other A/V connections aren’t built in; too heavy to be truly portable, so definitely doesn’t need a laptop stand!
The bottom line: A striking feat of engineering that’s sure to garner attention in a stylish home or on a multimedia-intensive sales call, the Dell XPS M2010 is simply too expensive and impractical to be anything more than a curio for the rest of us.
March 9th, 2007
High speed Internet connectivity has become more widely available at a reasonable cost and the cost of video capture and display technology has decreased. Consequently personal video teleconference systems based on a webcam, personal computer system, software compression and broadband Internet connectivity have become affordable for the general public. Also, the hardware used for this technology has continued to improve in quality, and prices have dropped dramatically. The availability of free software (often as part of chat programs such as Windows Live Messenger) has made software based video conferencing accessible to many.
For many years, futurists have envisioned a future where telephone conversations will take place as actual face-to-face encounters with video as well as audio. Desktop PC videoconferencing promises to make this a reality, although it remains to be seen whether there is widespread enthusiasm for video calling.
March 9th, 2007
D-Link, the industry leader in wireless networking, introduces another breakthrough in wireless connectivity. The D-Link AirPlus G DI-524 Wireless Router which is capable of transferring data at rates of up to 54Mbps in the 2.4GHz frequency — the same wireless frequency as 802.11b. The D-Link DI-524 Wireless Router also offers four Ethernet ports to support multiple computers.
The D-Link routers are available at almost every store, but good ones like newegg.com, tigerdirect.com offer you all kinds of merchant credit processing.
With the DI-524 Wireless Router’s built-in advanced firewall, threats of hackers penetrating your network are minimized. Some firewall features include functions that allow or disallow certain ports to be open for certain applications. Time scheduling can be established as a firewall rule so that specific ports will be open at certain times and be closed at other times. Features like content filtering, MAC filtering, URL blocking, and domain blocking are useful tools to prevent other unwanted intruders from connecting to your network or browsing restricted sites.
February 20th, 2007
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