A card game on your computer you can always just play the prepared downloaded games that typically come with all computers just go to start and click games or go to start open all your folders and find the folder labeled "games" and click on 1 of the card games like solitair and stuff.. otherwise you can always play card games online.online card games can be played at many sites I believe yahoo has card games, and also a site called "Kongregate" has many games, alot of which are card games.
Wednesday, February 3, 2016
What types of UPS are available?
There are three major types of UPS available in the market, each with their own advantages and cost.
Off-Line Units: Off-line units switch from the regular power source to an internal battery when there is a power drop. There is a brief delay between the time the power drops and the time the battery starts supplying power. However this downtime should be brief enough to avoid causing the computer to shut down. On-Line units are normally the cheapest UPS products available.
Line-Interactive Units: Line-interactive units add a transformer to minimise the need for an internal battery to be used with every power fluctuation. These units monitor the line voltage at all times and active the power transformer when the voltage falls below certain parameters. The battery is only ever activate when lower voltages are recorded. There is a brief delay between the time the power drops and the time the battery starts supplying power. However just like the Off-line units this downtime should be brief enough to avoid causing the computer to shut down.
How do UPS devices work?
UPS systems work by detecting decreases in the amount of electricity coming from the wall circuit and then boosting power to maintain a constant flow of electricity to the connected equipment. This power boost is achieved either from an internal transformer than enhances the electricity supply or from an internal battery that substitutes for the normal power source in the event of power failure.
What is the point in a UPS?
It is important to protect sensitive electronic equipment such as computers from fluctuations and cuts in the power as unexpected loss of power can cause permanent damage to components and data loss. A UPS will act as a surge protector, battery backup and generally “smooth” out the power your computer receives and ensure maximum stability. UPS devices are normally found attached to expensive mission critical workstations (such as graphical workstations or CAD machines) or servers where any downtime is unacceptable.
Printer Computing
The world's first computer printer was a 19th-century mechanically driven apparatus invented by Charles Babbage for his difference engine.This system used a series of metal rods with characters printed on them and stuck a roll of paper against the rods to print the characters. The first commercial printers generally used mechanisms from electric typewriters and Teletype machines, which operated in a similar fashion. The demand for higher speed led to the development of new systems specifically for computer use. Among the systems widely used through the 1980 were daisy wheel systems similar to typewriters, line printers that produced similar output but at much higher speed, and dot matrix systems that could mix text and graphics but produced relatively low-quality output. The plotter was used for those requiring high quality line art like blueprints.The introduction of the low-cost laser printer in 1984 with the first HP Laser Jet, and the addition of PostScript in next year's Apple Laser Writer, set off a revolution in printing known as desktop publishing. Laser printers using PostScript mixed text and graphics, like dot-matrix printers, but at quality levels formerly available only from commercial typesetting systems. By 1990, most simple printing tasks like fliers and brochures were now created on personal computers and then laser printed; expensive offset printing systems were being dumped as scrap. The HP Desk jet of 1988 offered the same advantages as laser printer in terms of flexibility, but produced somewhat lower quality output (depending on the paper) from much less expensive mechanisms.Monday, February 1, 2016
Computer Network
What is a Computer Network?
A computer network is a set of computers connected together for the purpose of sharing resources. The most common resource shared today is connection to the Internet. Other shared resources can include a printer or a file server. The Internet itself can be considered as a computer network.
Computer Network Defined a computer network is a set of connected computers. Computers on a network are called nodes. The connection between computers can be done via cabling, most commonly the Ethernet cable, or wireless through radio waves. Connected computers can share resources, like access to the Internet, printers, file servers, and others.
Types of Network Connections
Computer networks can be broken down historically into is a technique of connecting computers. The most common topology today is a collapsed ring. This is due to the success of a network protocol called the Ethernet. This protocol, or a network language, supports the Internet, Local Area Networks, and Wide Area Networks.
Star Topology
A star topology is a design of a network where a central node extends a cable to each computer on the network. On a star network, computers are connected independently to the center of the network. If a cable is broken, the other computers can operate without problems. A star topology requires a lot of cabling.
Bus Topology
A bus topology is another type of design where a single cable connects all computers and the information intended for the last node on the network must run through each connected computer. If a cable is broken, all computers connected down the line cannot reach the network. The benefit of a bus topology is a minimal use of cabling.
Collapsed Ring Topology
A similar topology is called a ring. In this design, computers are connected via a single cable, but the end nodes also are connected to each other. In this design, the signal circulates through the network until it finds the intended recipient. If a network node is not configured properly, or it is down temporarily for another reason, the signal will make a number of attempts to find its destination.
About mouse
Mouse is a national youth development nonprofit that believes in technology as a force for good. We empower all students to create with technology to solve real problems and make meaningful change in our world.Mouse opens opportunities for youth from under served communities and helps all students realize their full potential and the potential of technology to make a positive impact in their schools and communities.We are committed to increasing diversity in STEM and believe it is critical to support a diverse pool of talent to fuel the nation's future.
