Why Digital Signage? • No other medium makes it possible to deliver compelling content at the right location at the right time for maximum impact. It works whether your goal is to: • Increase sales and profits. • Inform, educate, notify, alert...

Power problems. • Power-problems • Sags • The Threat — A sag is a decline in the voltage level. Also known as “brownouts,“ sags are the most common power problem • The Cause — Sags can be caused locally by the start-up demands of electrical de...

...pair to connect end systems, and fiber optic versions for site backbones. It is standardized as IEEE 802.3. • The older versions of Ethernet are known as Thick (standard) and ThinNet Ethernet, standards that support speeds up to 10-Mbps. • Thin ...

Serial ATA technology • Serial ATA technology. • Introduced in the mid 1980s, the Advanced Technology Attachment (ATA) interconnect soon became the industry-standard parallel input/output bus interface for connecting internal storage devices. ...

Low-profile PCI serial adapters. • Low-profile PCI adapters. • Miniaturization is the rage • Ever notice that newer computers are getting smaller and slimmer? That means regular PCI boards won’t fit into these computers’ low-profile PCI slots....

...networks are complex systems of PCs, servers, printers, and the devices that connect them. Getting everything to work in harmony requires bundles of cables, and managing all those cables from inside a telecommunications closet can be a daunting t...

Virtual LANs • Virtual LANs (VLANs) • True to their name, VLANs are literally “virtual“ LANs—mini subLANs that, once configured, can exist and function logically as single, secure network segments, even though they may be part of a much larger...

...G.703 uses encoding systems, including High-Density Bipolar 3 (HDB3) in Europe and Alternate Mark Inversion (AMI) and Bipolar 8-Zero Substitution (B8ZS) in North America. They all operate on the Transport Layer (Layer 2) of the seven-layer OSI m...