Sunlight Readable LCD's gaining popularity
a look at the bright side when ordinary LCDs just don’t cut it

LCD panels are in abundance these days and although they are excellent for many applications, for some they just don’t cut it. A typical LCD monitor produces a maximum brightness (white light) of about 200–350 nits. This is fine for most desktop and indoor applications where the ambient lighting conditions are optimal. In the past few years we have seen an increased demand for LCDs that will work in high ambient lighting or direct sunlight environments. For indoor use with uncontrolled or indirect sunlight it is recommended that a display of 500 – 900 nits be used. If the application is outdoors or in direct sunlight then at least 1000 nits and up should be considered.

Count on Durability
Designed to withstand harsh outdoor conditions, the sealed rugged stainless steel bezel can take a hose down surviving demanding industrial and commercial applications.

Last year Stealth launched a new website www.brightlcd.com which offers powerful sunlight readable LCD displays that are designed to operate in extreme ambient light conditions including direct sunlight. Stealth's Bright LCD’s are built to outperform commercially available products that wash out in direct and indirect sunlight conditions.

They are built to survive harsh environments indoors or outdoors in a wide range of applications that include:

• Human Machine / Operator Interface
• Process Control & Factory Automation
• Marine/Mobile & Transportation
• Refineries and Power Generating Plants
• Outdoor Use, Advertising
• Digital Sign Applications
• Security, POS & Commercial Kiosks

What are the SCSI Types?
There are really only three basic specifications of SCSI:

SCSI-1 was standardized by ANSI in 1986. The initial implementation of SCSI (now called SCSI-1) was designed primarily for Narrow (8-bit), single-ended, synchronous or asynchronous disk drives and was very limited relative to today's SCSI. It includes synchronous and asynchronous data transfers at speeds up to 5 Mbytes/sec. The standard connectors are the familiar 50-pin, female, low-density non-shielded connector for internal wiring and the equally familiar 50-pin, male, shielded "centronics" type connector for external wiring

SCSI-2: An update that became an official standard in 1994, a key component of SCSI-2 was the inclusion of the Common Command Set (CCS) -- the 18 commands considered an absolute necessity for support of any SCSI device. You also had the option to double the clock speed from 5 MHz to 10 MHz (Fast SCSI), double the bus width from 8 bits to 16 bits and increase the number of devices to 15 (Wide SCSI), or do both (Fast/Wide SCSI). Finally, SCSI-2 added command queuing, which means that an SCSI-2 device can store a series of commands from the host computer and determine which ones should be given priority.

SCSI-3: Quickly on the heels of SCSI-2 came SCSI-3, debuting in 1995. The interesting thing about SCSI-3 is that a series of smaller standards have been built within its overall scope. Because of this continually evolving series, SCSI-3 is not considered to be a completely approved standard. Instead, some of the specifications developed within it have been officially adopted. These standards are based on variations of the SCSI Parallel Interface (SPI), which is the way that SCSI devices communicate with each other. Most SCSI-3 specifications begin with the term "Ultra" (Ultra for SPI variations, Ultra2 for SPI-2 variations and Ultra3 for SPI-3 variations). The Fast and Wide designations work just like their SCSI-2 counterparts, with the Fast designation meaning that the clock speed is double that of the base version, and the Wide designation meaning that the bus width is double that of the base.

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