Aug
28
I am starting new business in computer hardware. SO pls suggest me some unique name for my shop.
ERNESTO
Aug
27
Does anybody know of any jobs repairing binoculars or computers around the ft.meyers, fl. area?
Filed Under Other - Careers Employment | 1 Comment
I work for bushnell right now and considering moving to florida.
EUGENIO
Aug
26
Anyone know someone who works as a computer hardware engineer that I can get in touch with?
Filed Under Other - Computers | 2 Comments
I have a project due next week and it’s about my career field. I have to interview someone who is in the same career field and a Computer Hardware Engineer. Does anyone know someone who I can get in touch with or someone who I can possibly e-mail the interview questions so they can answer them? Much appreciated.
IVAN
Aug
22
hi i wanted to know how much computer hardware engineers get paid (right out of college, and after a few years) and what exactly do they do and how long does it take to be one. thanks
MAURICIO
Aug
21
How much does the motherboard cost for repairing because when i install Windows the computer turns off?
Filed Under Other - Hardware | 1 Comment
How much does the motherboard cost for repairing because when i install Windows the computer turns off?!
the computer is k7vt4a+
LAMAR
Aug
20
where can i find a job repairing and refurbishing computers? sorta like an HP service center. or refurbisher.
Filed Under Financial Services | 3 Comments
i want to work at a place where its nothing but a warehouse or a place where there are no customers, just you and/or your co workers fixing an endless amount of pcs sorta like a service center or a used computer refurbisher.. testing out parts, building computers, swapping out parts…. etc…. no customer interaction, no low wages, just you and a bunch of pcs that need rebuliding and repairs
id like a place thats in united states… california preferably.
i got an A+ certification.,6 years computer experience, and… 3or so months working as a computer tech at a retail store
EVERETTE
Aug
17
Vdu: the Computer Monitoring System
Filed Under Computers | Comments Off
INTRODUCTION
the Visual display Unit (VDU) according to International Labour Office (1989) defined VDU as an electrical instrument that is use to display the information recieved from the computer system,in a very short period of time emerged from comparative obscruity in scientific laboratory(s) to become an integral and indespensable part of normal working life for millions of people both in home and in workplaces. As the technological revolutioncontinues, the use of computer with screen-base output unit or VDU grows at an incresing rate. worlwide, millions of VDUs are now in use, recieving and processing information on television-like screen or monitors. Also, it is a television type monitor that display information recieved from computer system wordprocessor rather than from a signal broad cast for televisio. The VDU contributes the interactive element between the operator and the computer system. The VDU could be limited to a main computer, as with a terminal or the physical entity comporising the VDU could also include the computer system, as with a personal computer (PC). the basic principle of operation of most VDUs in use is simikar to that of television sets.They contain a large evacuated glass tube, called Cathode Ray Tube (CRT), which include a source of electrons (The Cathode) and a phospor coating on thte inside of the vewing face of the screen. A high voltage (typically) in the range of 10-25kv accelerated electrons, releasing from the cathod towards a second electrode called The Cathode. They pass the through a hole in the anode on to the phosphor materials. However, computers are very important and for all the apparent complexity, they seems to hve a wide range of uses and play an ever-increasing role within our society likeoffice, commerce and industries, public services and of course schools and home, with this we can see that the importance of computer monitor can not be over emphasis.
STATEMENT OF THE PROBLEM
The study is to determine the influence of computer monitor (VDU) a computer system of an organisation and it is stated below:
1. what are the effect of VDU to human and health?
2. what are the control measure and prevention of VDU effect?
3. what are the measuement and level of control of radiation emmision of VDU?
PURPOSE OF THE STUDY
The purpose of this seminar is to provide information on the computer monitor which base on the influence, importance and the uses of computer monitor in a computer system of an organisation.
SCOPE OF THE STUDY
This project work will be based mainly on the use, importance and the configuration of a computer monitor
METHODOLOGY
During the course of this project work, data were obtained from second sorce, this cisist of information from the periodicals, texetrbooks, encarta software and research findings. Aslo, search engines like www.google.com, www.devilfinder.com, www.mamma.com, and son on will also contacted during the project work.
LIMIITATION OF THE STUDY
This research work suppose to go in-depth but due to the power fai.lure, there is no money to move from one place another, insufficient time allocation and the resarch is also expensive to carry out.
ANALYSIS TO THE STUDY
In the first generation of computerwhich was between the year 1945-1958 one of the first digital computer in this generation was a machine called ENIAC (Electrical Numerical Integrator and Calculator) was design band built at the Moore school of Electrical Engineering at the univesity of Pennsylvanian in 1956. This ENIAC contained over 18,000 vacuum tubes wieghed more than 30 tons and required 1500 square fact of floor space. It was programmed by setting up to 6,000 switch and connecting cables between the various units of the computer.
The second generation introduced the designing computer which was between (1958-1964) machine based on the store concet using discrete semiconductor element diodes, translator and so on. The vacuum tube was reduce to weighed about 25 tons and required 1000 sqaure of the floor space and again reduction in heat generation. The size-reduction brought by the utilization of semiconductor elements.
Between 1964-1971 which was the third generation f computer which was the third generation of computer which was characterized by further reduction in sixe of the VDu low cast, low in heat generatiion. Introduction of im[proved method of storing datas and applicaron of Integrated Circuits (I.C.), they accepted their input data through magnetic tape and magnetic disk, which they also accepted for secondary storage.
During 1971-1975, Here computer were first designed on the basis of large-scale integrated circuit along with vacuum 3tube and transistror. Each electronic along has its own set of characteristics including reliability, packing density, heated dissipation, speed and cost of all which designer must balance then the VDU size was drastically reduced compare to the first generation and the cost which is very cheap. This fourth of computer are otherwise known as microprocessor on a chip and is characterized by the energence of personal computer (PCs) so called foruth generation programming language such as spread sheet, Dbase III, windowing menu dialoging and other paraphernalia.
The fifth generation of computer (1975-1995) is the mother language or lingual franca of each user. Hence the following thechonolgies were involved in the fifth generation; (1) Micro electronics (2) computer architecture (3) Artificial intelligence (4) Language processing (5) database management. A logical influence is an elementary inductive method of reasoning and each lips is equivalent to some 300 instruction on a conventional computer.
The sixth generation of computer monitor was the geneation which innovation called Optic Computer, the computer of this generation is from year 1995 till date and the computer of this generation are laptop computer, palmtop computer, plasma computer all which are usin a flat screen are been constructed. Here are the computer monitor that came into being in this generation MDA (Monocrono Display Adapter), HA (Hercules Adapter). CGA (Color Graphic Adapter), LCD (Liquid Crystal Display), Palmtop Plasma Television and so on.
THE DESIGN OF A MONITOR
The Monitor could be linke to a main computer, as with a terminal, or the physical entity comprising the VDU could also include the computer system, as with a personal computer (PC). The basic principle of operation of most VDUs in use is similar to that of television sets. They contain a large evacuated glass tube called Cathod Ray Tube (CRT), which include a source of electrons (the cathode) and a phosphor coating on the inside of the viewing face of the screen. A high voltage (typically in the range of 10-25kv) accelerates electrons release trom the cathod towards a second elctrode on to the direction and thus the impact of the points of the electrons on the phosphor are controlledby magnetic field produced by deflecting the coils mounted near the back of the tube. In this manner, the electron beam is swept horizontally and vertically across the viewing face-the whole face normally being-covered in about 1/70th of a second. By modulating the intensity of the electron beam in each position, the resulting pattern of light and dark points can be generated into pictrue. The electronic circuit used to control these processess gives rise to both radio frequency (RF) field and to electric and magnetic fields of lower frequencies. Recently, solid state circuitry in conjuction with liquid crystal, gas plasma or similar display technology(s) has been used to replace cathode ray tube. However, to a rather limited extent.
DEFINITION OF TERMS
Computer:- an electronic device capable of storing and processing information in accordance with a set of instruction.
Cathode Ray Tube:- a vacuum tube in which beam of electrones produce a luminous image on a fluorescence screen, used in television and display unit (VDU).
Monitor:- a television used to view a pictrue from a particular camera o a display from a computer.
Monochrome:- consisting of or display image in black and white or in varying tones of one color.
Hercules:- requiring or having greate strnght or effects.
Flash:- shine with a bright but brief or irregular light.
Pixel (Pictrue Element):- any of the tiny ray of light on a display screen which are made up of an image.
Pallete:- a thin board on which an artist lay anf mixes pints abd the range of color used by an artists.
CONCLUSION
In conclusion, there are no health hazards associated wityh radiation, graphic adapter and field from VDUs. However, since a large number of people are involved in VDU work measure sohould be taken to ensure that VDU workplace are economically well designed. This include aspect of the VDU, the workstation and the work environment as well as work organiszation.
REFERENCES
Bergqiust, U. (1984), “Video Display Terminals and Health”, in scandinavia via journal of work environment and
health (helsinkin), vol.10.
Health and Welfare (Canada).1993), Investigations of Radiation Emission from Vidoe Display Terminals, Reporter 83-
-91 (Ottawa, Environment Health Directorate).
Intenational Labour Office (ILO), 1989. Working With Visual Display Unit, Occupational safety and Health Series
No. 61.
Locksley E.A. et al (2006). Introduction to Computer Studies 1, Immacuilate Concept, Ogbomosho, Oyo state
Pg. 3-7.
Micheal Tooley (1997), PC Troubleshooting Pocket Book, the bath press Pg. 150.
DENNIS
Aug
17
What does it mean to unassemble your computer and hardware componets?
Filed Under Other - Hardware | 4 Comments
I wanted to apply to this warehouse job, and that was one of the responblities they had listed!!
Unassemble computer and hardware components
-Assist with loading and unloading computers into boxes
-Set computer and hardware back up at new work station
-Assist with general office warehouse support
-Other duties as assigned
Female or Male Job???
MORTON
Aug
17
How can I limit the Bandwidth computers on my network receive?
Filed Under Computer Networking | 1 Comment
I am on a network with a total of three computers. The others are constantly torrenting and taking so much bandwidth, I receive almost nothing. Is there a way to limit the amount of bandwidth they can consume from my computer? One is on a wireless connection and the other is on a 125 foot cable.
FIDEL
Aug
13
What I am looking for are good, easy to understand books on repairing, programming and upgrading computers. I dont know if they go hand in hand, but I expect there to be more than one book to read to learn. I am not tryting to become a programmer or repair technician, I just dont want to have to take my computer in all the time.
Basically I want the knowledge of an expert computer tech., but dont need to worry about becoming one. Im sure getting this A+ certification thing wouldnt land me a job as one anyways, if thats what that certification is for either way. I just want to learn it, things like how to manually wipe the hard drive, and re program the computer myself. Basic troubleshooting, upgrading tech. and tips, etc.
Hopefully you guys know what Im talking about and know of a few good books, maybe even cd roms. And the reason Im not going to school for it, is because I dang sure cant afford that. Thanks everyone for your input.
LON









