Advantages of a Printer Hard Drive
It is becoming increasingly common for businesses and even home users to have a printer hard drive. Due to the high resolution graphics now being used in all aspects of printing it is important to know why the printer hard drive is important and what it can do for you. A printer hard drive can serve many purposes from tracking user statistics to storing data. First, it is a great tool for monitoring the printer’s use and its consumables. This enables higher efficiency when ordering supplies as the printing department can track exactly what has been used and for what applications, not to mention which users or groups use which consumables the most.
Another major point about printer hard drives is their ability to hold and store frequently used documents and images. If your company has a particular form that is needed for new business, for instance, that form can be stored on the hard drive instead of a personal desk top freeing space for more important data. Printer errors may not always be noticeable to the end user and the printer hard drive can be set up to log all errors into a log file much the same way a PC hard drive does. This allows for better maintenance and preventative care for the printer which can lengthen the life of the device.
One of the nicest perks to having a printer hard drive is password enabling or secure printing. An end user can store sensitive documents on the printer hard drive which can only be accessed if the user keys in the pass code on the printer interface screen. This alleviates the possibility of sensitive materials being printed by anyone from anywhere on the network. The user that needs the secure printing has to be at the printer to access them. To save time, specialized fonts, printing styles, logos and client data can be stored on the drive as well allowing access to all users on the network or assigned group increasing performance and proficiency.
Troubleshooting Printer Spooling Problems
At its most basic definition a printer spooler retrieves the data for a requested print task and performs the required print even if it is not printing multiple print jobs. The simplest explanation, and where you should start, is in the task manager. Under “processes” in the task manager look for a file called spoolso.exe or spoolsv.exe; if these files are not present it simply means that the process has been stopped and needs to be restarted. This can be done by running “net start spooler” command. In the start menu bring click on the “run” option and type the command in the box prompt.
Sometimes a faulty printer driver is the cause. This is hard to determine in any sort of certainty, but a simple reinstallation of the drives is simple and easy enough for virtually any user. Uninstall and reinstall your printer driver; if the printer works after the reinstallation you are safe and ready to print. The next step would be to check if old printer drivers are still installed on the computer. These can sometimes conflict with each other allowing an old print driver to be the spooler and not the proper driver for the current printer. Remember to clear the printer’s queue before removing the old drivers.
A last attempt at solving printer spooler problems is to manually delete the files in the printer driver. These will all be either .shd or .spl file types and are located in the temporary directories of your printer spooler subsystem. Whatever you do, do not delete the spooler subsystem app. This can cause even worse printer problems and in rare cases can cause major printer failures and errors. Should none of these work or solve the problem, it is in your best interest to seek a professional in the matter of solving the problem. Most printer spooler problems can be solved by the user in a few short steps.
Replacing an Acer Laptop Keyboard
A keyboard may need to be replaced due to a malfunction or an accidental spill of some kind of liquid on the keyboard. This guide uses an Acer Aspire 5315 as an example but the steps will generally work with most Acer laptops. I must advise that the memory bay/PCI cover does not need to be removed to replace the keyboard. By the way it is a pain to get off and only needs to be removed if you are upgrading RAM or adding a new PCI card. As a first step remove the battery and unplug the AC adapter form the wall and the laptop. After removing the battery find the screws in the battery bay and remove them.
The screws hold the cover of the keyboard in place. Next turn the laptop over and begin by loosening the cover directly above keyboard; it will need to be pried by another precision tool, preferably a flat head screwdriver. The cover also encompasses the power button and speakers so be very careful lifting the cover or you may pull out part of the speaker assembly. Under the cover you will find a set of clips holding the keyboard in place. Once more use your precision tools to ease the clips off, be sure not to pull to far too quickly when removing the keyboard as it is connected to the laptop via a cable.
You should have enough cable to fold the Acer laptop keyboard completely forward to remove the cable. The cable is attached through an interlocking clip mechanism like an internal fan is connected to a PC’s power supply. Gently remove the cable and then the keyboard. The only other area that can be accessed is the CPU fan from here and it can only be cleaned. Attach the new keyboard cable and proceed in reverse these steps; the keyboard backing is quite malleable and care should be taken not to bend or warp it in the process.
How Does an Integrated Circuit Work?
Integrated circuits are in almost every appliance known to man at this point in history from wristwatches to televisions and from coffee makers to, the most obvious, computers. An integrated circuit is a collection of diodes, transistors and microprocessors in miniature scale all operating on a single piece of semiconductor, typically silicon. Each performs a specific function that, when combined with the other components, can perform multiple tasks and calculations. First are the diodes; diodes by definition are electronic or electrical devices that regulate the flow or current of electricity within the circuit. Diodes control how much, when and how often electrons or electricity is allowed to flow into other parts of the system.
We have all heard of transistor radios from the early 20th century and the transistors in integrated circuits, or ICs, are them same, at least by definition. Transistors can store voltage to stabilize the circuit or for amplifying a signal. A transistor can be used as a switch, similar to a light switch, for an integrated circuit or for functions held within the circuit. For example, a transistor my only allow a certain voltage through to another part of the circuit. It does this by using a gate that is set to open only at a specific voltage; for binary code it is five volts. Opening the gate is a 1 in binary while closing the gate is 0. This way the transistor sends the information or data through the integrated circuit to its destination within the system.
The most important part of an IC is the microprocessor. Microprocessors simply give the integrated circuit memory, memory to perform calculations and follow logic, or a set of rules. The logic tells the integrated circuit how to process electricity, data and how to function. Think of the microprocessor as the operating system of the IC; the way the transistors and diodes work to enable a television to be turned on when the power button is pressed, or how to interpret a mouse click on an icon on a desktop computer. On some IC chips there are more miniature components than there are humans on Earth, and the applications are literally limitless.
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