Identifying the Parts of a Bubble-jet Printer

Being able to identify the parts of the bubble-jet is an important skill.

1. Unplug the bubble-jet printer from the power source and the computer


2. Open the top cover to expose the inner print mechanism


3. Locate and identify the paper tray


4. Locate and Identify the paper-feed sensor




5. Locate and identify the pickup rollers




6. Locate and identify the speparator pads




7. Locate and identify the printhead and carriage assembly
   

The Bubble-jet printing process

The bubble-jet printing process consists of a set of steps the printer must follow in order to put the data onto the page being printed.

1. You click the print button that initiates the printing process.



2. The software you aree printing from sends the data to be printed to the printer driver you have selected


3. The printer drever use a page description language to convert the data being printed into the proper format that the printer can understand.


4. The printer driver sends the information to the printer whatever connection method is being used(USB, network,parallel, and so on.


5. The printer stores the received data in its onboard print buffer memory.



6. IF the printer has not printed in a while, the printers control circuits activate a cleaning cycle. A cleaning cycle is a set of steps the bubble-printer goes through in order to purge the printheads of any dried ink.


7. Once the printer is ready to print, the control circuitry activates that paper-feed monitor.This causes a sheet of paper to be fed into the printer unti the paper activates thepaper-feed sensor, which stops the feed until the printhead is in the right position and the leading edge of the paper is under the printhead.


8. Once the paper is positioned properly, the print head stepper motor uses the printhead belt and carriage to move the printhead across the page, little by little.
   
9. At the end of a pass across the page, the paper-feed stepper motor advances the page a small amount. Than the print head repeats step 8


10. Once the page is finished, the feed-stepper motor is actuated and ejects the page from the printer into the output tray. If more pages need to print, printing the next page begins again at step 7.


11. Once printing is complete and the final page has been ejected from the printer, the printhead is parked(locked into rest position) and the print process is finished

Degaussing A CRT Monitor

Degaussing is the reduction of the magnetic field of an object. It is generally impossible to completely neutralize an objects magnetic field so reducing it is the objective. Degaussing a computer monitor can help correct and fix any visual distortions being displayed on a CRT monitor and can also often improve the overall picture being displayed on the monitor. One application of degaussing is to randomize the magnetic domains on the surface of a magnetic storage medium, such as a hard disk drive. Degaussing the drive makes previously saved information all but unrecoverable. Since the CRTs use magnetic fields to guide the electron beams to their intended targets, and LCDs do not, degaussing a monitor is strictly a CRT-related practice. You cannot completely destroy the magnetic field of an object, repeated degaussing of a CRT monitor is not advised. In fact, the monitor can be damaged by degaussing it more than once in a short period of time.

STEPS ON HOW TO DEGAUSS CRT MONITOR

1. To degauss the monitor, open the monitor setup through the buttons found on the front of the monitor.


2. Using the arrows or prssing the buttons multiple times will allow you to view all available options. One of the options should be degauss.


3. Once selected your monitor should make a loud noise and the display will appear to go distorted for a few seconds. If this occurs you've successfully degaussed your monitor.

ISA EXPANSION SLOT

What is a ISA Expansion slot

ISA stands for Industry standard Architecture. ISA bus was developed by a team lead by mark dean at IBM as part of IBM PC project in 1981. It originated as an 8 bit system and was extended in 1983 for the XT system architecture. The newer 16-bit standard IBM at bus was introduced in 1984. In 1988, THe Gang of Nine IBM PC compatible manufacturer put forth the 32-bit EISA standard and in the process retroactively renamed the AT bus to "ISA" to avoid infringing IBM's trademark on its pc/AT computer. ISA slots are an older type of expansion slot, twice as big as pcI slots and slower than pcI slotsas well. ISA slots are usually black, while PCI slots are usually white ISA slots are not used much anymore, but most computers still have at least one of them. ISA networking cards ISA sound cards, ISA video cards, and other types of ISA expansion cards can be used in the ISA slots. ISA expansion slots lets you plug data acquisition boards into PC's.

Whats the purpose of ISA Expansion Slot

The ISA slot is a slot inside your desktop computer that allow you to add hardware(internally) you will open the lid of your pc and insert the ISA card into the ISA slot.

changing the setting for Multiple monitors

Another exercise 3.2 in my book explains how I can changed the settings for Multiple monitors. A multimonitor allows you to use two monitors on the computer at the same time. According to my book A+ complete study if a person were to give a presentation and would like to have a presenters view on their laptop LCD but need to project slideshow onto a screen, you might need to connect an external projector to the laptop. I found this exercise rather interesting, and these are the step that I went through to changing the settings to Multiple Monitors. You know at exercise 3.1 were we had to click on display setting links and we click on the advanced setting button there were two monitor icons 1 and 2 well you click on 2, check the extend the desktop onto this monitor box, click and drag the second monitor to what ever position that you want around the primary monitor, and finally while the second monitor is still selected, change the refresh rate and resolution. Thats how you change the settings for multiple monitors.

changing the refresh Rate in windows vista

in my computer architecture class were supposed work on exercise 3.1 changing the Refresh Rate in windows vista. Refresh rate is the number of times a display image is repainted or refreshed per second. the refresh rate is expressed in hertz. a refresh rate of 75 hz means the image is refreshed 75 times in one second. these were some of the steps that I had to go throw to change the refresh rate in window vista this is different in window xp. 1.) Right-click a blank portion of the desktop. 2) click personalize 3.) there should be a big screen that says personal appearances and sounds with a list of icons click on the display setting link. 4.) click on the advanced setting button there should be a picture of two icons with 1 and a 2. 5.) click monitor tab you have a choice of picking 60 hertz or 70 hertz what ever you prefer and thats how you changed the refresh rate using windows vista. According to my text book A+ computer study guide it says just because refresh rates appear in this dialog box does not mean that the associated monitor will be able to handle that rate.

What is a computer?

A computer is an digital electronic device that combine hardware and software to accept input of data it process and store the data, to produce output. Some of the basic components that you need to build a computer are: motherboard, processor, powersupply, case, hard drive, operating system, cd/dvd rom drive, video card, RAM