Computers

Modern industrial robots are true marvels of engineering. A robot the size of a person can easily carry a load over one hundred pounds and move it very quickly with a repeatability of +/-0.006 inches. Furthermore these robots can do that 24 hours a day for years on end with no failures whatsoever. Though they are reprogrammable, in many applications (particularly those in the auto industry) they are programmed once and then repeat that exact same task for years.

A six-axis robot like the yellow one below costs about $60,000. What I find interesting is that deploying the robot costs another $200,000. Thus, the cost of the robot itself is just a fraction of the cost of the total system. The tools the robot uses combined with the cost of programming the robot form the major percentage of the cost. That's why robots in the auto industry are rarely reprogrammed. If they are going to go to the expense of deploying a robot for another task, then they may as well use a new robot.

This is pretty much the typical machine people think of when they think of industrial robots. Fanuc makes this particular robot. Fanuc is the largest maker of these type of robots in the world and they are almost always yellow. This robot has six independent joints, also called six degrees of freedom. The reason for this is that arbitrarily placing a solid body in space requires six parameters; three to specify the location (x, y, z for example) and three to specify the orientation (roll, yaw, pitch for example).

If you look closely you will see two cylindrical pistons on the side of the robot. These cylinders contain "anti-gravity" springs that are a big part of the reason robots like these can carry such heavy loads. These springs counter-balance against gravity similar to the way the springs on the garage door make it much easier for a person to lift.

You will see robots like these welding, painting and handling materials.

The robot shown at right is made by an American company, Adept Technology. Adept is America's largest robot company and the world's leading producer of SCARA robots. This is actually the most common industrial robot. SCARA stands for Selective Compliance Articulated (though some folks use Assembly here) Robot Arm. The robot has three joints in the horizontal plane that give it x-y positioning and orientation parallel to the plane. There is one linear joint that supplies the z positioning. This is the typical "pick and place" robot. When combined with a vision system it can move product from conveyor belt to package at a very high rate of speed (think "Lucy and the candies" but way faster).

The robot's joint structure allows it to be compliant (or soft) to forces in the horizontal plane. This is important for "peg in hole" type applications where the robot will actually flex to make up for inaccuracies and allow very tight part fits.

The machine at left can be called a Cartesian robot, though calling this machine a robot is really stretching the definition of a robot. It is Cartesian because it allows x-y-z positioning. Three linear joints provide the three axes of motion and define the x, y and z planes. This robot is suited for pick and place applications where either there are no orientation requirements or the parts can be pre-oriented before the robot picks them up (such as surface mounted circuit board assembly)..

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Both have advantages. They are used for different purposes. one basically the earth flattened and cut up into small grids and is used for coastal, relataively short journeys. the other is for ocean passages and allows for course that will alllow for the earths curvature so that the ship takes the shortage possible route.

• DVD-ROM
• CD-ROM
• External hard disk
• floppy disk
• pen drive

It's very similar to real-world queues. Queues can be used for various purposes. For example if there are multiple tasks that are waiting to be executed, then they will wait in a queue for their turn to come. Another use is when some resource (say your printer) is needed by various tasks for their successful and complete execution. These tasks will then wait in the queue for their turn as each task in front of them uses and releases the printer and then exits the queue.

Basically a queue is a First In First Out (FIFO) structure. This means, that like real-world queues, the first task to enter the queue will be the first to execute or obtain its required resources. Any other tasks that come after it are added to the rear end of the queue and from there they move to the front of the queue one-by-one as their turn comes up.

Hope that helps.

Flash Drives 2-4 GB allows a used to easily move files between computers and is small enough to fit on a key chain. You can also buy SD cards that are very popular in digital cameras. = Top 10 Top Ten Web Search Computer Accessories = 1. Digital Picture Frame with Remote

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Press Ctrl, Alt, up arrow but this only works on Windows Vista.

Laptop carts are available through many retailers, both on-line and in store. For a wide variety of options, you may want to look on Amazon's website. They offer many different styles and brands. If you prefer to shop in-store, you can check out Office Depot and Wal-Mart. Both stores also offer online options as well.

Think of it this way. If you had an identical twin and both of you are named exactly the same, how will people tell you apart?

It makes the computer circuits much simpler. It is fairly simple to have circuit elements that can have two different states, and to do operations (like addition or multiplication) on those states.

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it cost about $20-$30.

Single

There are many stores that one can get a 17 inch laptop backback at. Some stores that sell that are Walmart and Target, They both have a wide selection to choose from.

The IRS says computers need to be depreciated over 5 years. That was an absurdly long time, even when the rule was established. Most small businesses ignore the IRS regulations, and simply expense a computer as if it were a hammer or an electric pencil sharpener.

Yes, it is. Before you can download, you will have to log in.

dont worry too much .. the statistics says more than 80% of mainframe professionals have never seen a mainframe in their carrer :)

have seen one in my trining centre .. looks like acase of height 6 to 6.5 ft

and a lappy in the middle of it but with different kinda keyboard .and if u wanna have a look u can google for it in google images

Different types of buses:

P ISA (Industry Standard Architecture)

P EISA (Extended ISA)

P VESA (Video Electronics Standards Association, VL Bus)

P PCI (Peripheral Component Interconnect)

P USB (Universal Serial Bus)

P AGP (Advanced Graphics Port)

software is a general term for programs that control the computer system.

there are two types of software.

programs that allow the hardware to run properly, e.g.operating system-system software:

application software:programs that allow the user to do specific tasks, e.g.

spreadsheets.

Computers communicating with each other has allowed for many things that we now take for granted. The internet, for instance, relies on many computers communicating with each other to transfer information from one place to another very quickly. Banks rely on computers communicating to run automated teller machines. Stores rely on computers communicating to notify each of inventory and other things. Telephone systems now rely on computers communicating with each other.

This would be true. A data file is a file that contains the data which controls the operations of a program or task, which is the instructions for how to perform the task or run the program.