While computers have been around for decades their components inside keep evolving. In order to keep up with this evolving technology a Network Administrator will need to receive the proper certifications and training.
This topic is important to me because I feel that people do not know any of the history of how the computer was invented, what all of the components inside a computer do, and how much work goes into building and designing a new computer
http://www.dictionary.com A computer is just a device that you give it a set of instructions and it will perform the desired tasks that you told it to do. ALso, computers are also in everything that we have today in this day in age. Computers are in our watches, car, cell phones, etc.
In this section of the powerpoint I will be telling you the history of computers, and the people that invented them. http://laptops.webhostingoverview.com/wp-content/uploads/2007/06/176.jpg http://images.apple.com/macbookpro/images/design-hero20090915.jpg
William Schockard was born in 1592 in Germany he was a universal scientist, and a professor in astronomy. While he was in college he mainly researched mathematics, and astronomy. Schockard was also one of the first people to build a working calculating machine back in 1623. The calculating machine that he invented and built was designed to calculate astronomical tables. The machine that he built could only perform simple tasks such as add and subtract six digit numbers.
Konrad Zuse was not the inventor of the first computer, but he invented the first computer that was fully functional and programmable. Replicas only exist because Zuse’s original computer was destroyed when the allies bombed Berlin in 1943. All photos, and original documents of the machine were also destroyed. Some facts about his computer are that the original one consumed over 4000 watts of electricity, it took .8 seconds to add & 3 seconds to multiply, and it weighed over 2,200 pounds.
The picture to the left is a picture of Konrad Zuse, and the picture to the right is a replica of the Z3, Konrad Zuse’s invented. http://upload.wikimedia.org/wikipedia/commons/4/4c/Z3_Deutsches_Museum.JPG
Early computers were all hand built because there was not enough demand for them. The demand for the computer was not great because they were very expensive. It cost $666.66 ($2,500 adjusted for inflation 2009) for the Apple I that was introduced to the public in 1976. Also, the early computer could only perform simple tasks such as running a spreadsheet program. http://upload.wikimedia.org/wikipedia/commons/2/27/Apple_I.jpg
Many of the modern computers that are made today are designed to be lightweight, and be very cheap. Besides the advantages of having a small computer with the low cost and portability, there are many disadvantages when it comes to a small and cheap computer. Firstly with a small computer, since there is less space inside the computer the components become smaller and the electronics tend to become very hot and overheat fast. Also, when computers are becoming cheaper then the parts become more mass produced and then today’s computers are not are durable as they were 5 years ago. As technology evolves, then the computers that are made today are hundreds of times more powerful regarding processor speed. Also when computers were first available they consumed about 20,000 watts of electricity, and today computers can use as little as 30 watts of power http://i.dell.com/resize.aspx/inspiron-1012-right-black-standard-500/149 http://media.laptoplogic.com/data/news/images/2615/dell-new-inspirons.jp g
On April 4, 1975 Bill Gates founded the company Microsoft On April 1, 1975 Steve Jobs and Steve Wozniak founded the Apple Computer computer
Keeping a work environment clean is important because of many reasons. -when dusk gets between metal contacts, it could cause a device to not work properly -always use a antistatic mat and antistatic wrist strap because static electricity can short out electrical components causing them not to work.
Always unplug before servicing anything, because if you don’t, you could receive a potentially deadly shock. Also, some of the electronics that make up a computer retain energy when you unplug a computer, so first unplug the device, and wait a couple minutes. Unplugging a computer could also reduce energy costs, come of the components in a computer can still consume energy even when the computer is off.
It is always important to remove anything that is conductive from your hands and wrists because if you don’t you can get a electrical shock and you can short out electrical components.
Capacitors look like small batteries and they are deceiving because you cannot visibly tell if they are currently storing electricity. Some capacitors can store electricity for a period of time even when they are disconnected from a power source. To discharge a capacitor you should get a screw driver and touch the two leads, and then the capacitor is safe to touch or handle. http://rsk.imageg.net/graphics/product_images/pRS1C-2264681t98.jpg http://rsk.imageg.net/graphics/product_images/pRS1C-2266188t98.jpg http://rsk.imageg.net/graphics/product_images/pRS1C-2264549t98.jpg
Never service parts that are not designed to be serviced because they contain sensitive parts that are not made to be touched. Some parts are not designed to be serviceable because parts are not available for the product, and some items can be serviced, but by only a qualified professional.
The CPU is commonly referred to as the brain of the computer because it is the place were most calculations of the computer take place. Also, the CPU is the most important element of a computer heattsink http://www.product-reviews.net/wp-content/userimages/2008/05/budget-45nm-penryn-cpu.jpg http://www.digitalworldtokyo.com/entryimages/2008/01/080130_CPU.jpg
Heat-sinks are very important because heat is one of electronics worst enemy. Because if a device overheats you could potentially destroy the computer. Heat-sinks operate off of the principle that it attaches to a device that is hot and it absorbs and dissipates the heat because it is cooler. The heat-sink then transfers the heat from the fins of the heat-sink to the air through a fan. http://www.dictionary.com http://www.build-your-own -computer.net/image-files/cpu-heatsink-basic.jpg http://www.electropages. com/articleImages/large/14307.jpg http://www.simplyheatsinks.com/simheat/B asics/Principle.aspx
RAM is a volatile type memory which means that it will lose all of its contents once power is lost to the chip, compared to a hard drive which keeps its contents stored even when the power is lost. RAM is a type of computer memory that stores all of your applications and files that are open on the computer. How RAM works is that when you open a application the computer loads the application from the hard drive to the RAM in which it runs from until you close the application. Why is having enough RAM important? RAM is important because the lack of RAM is usually the main bottle neck in computer performance Also, adding RAM to your computer can also be one of the “Cheapest” ways to speed up your computer.
A hard drive is a non-volatile type of storage that magnetically stores data on a platter or disk. The hard drive is also a important part to a computer because it stores all of the user date and information required to run a computer. Hard drives are very fragile because it has a precisely balanced disk and even the slightest bump can knock off its alignment. If the hard drive is damaged in any way you can permanently lose everything on the disk forever. Non-volatile memory is a type of memory that can store information even when it is powered off. http://globaltech-ow.com/Products/Storage%20devices/images/TTB.jpg http://img16.imageshack.us/i/1020064.jpg/
There are many advantages of having a solid state drive than a Hard drive. Solid state drives are 3-5 times faster than a hard drive, They are completely silent, they have a very high reliability because of the lack of moving parts, they use less power (this is key for laptops), and in a SSD there is twice the data density than a hard drive. SOme disadvantages of SSD’s are more expensive than a hard drive (.10 per gigabyte for a hard drive and 2.00 per gigabyte for a SSD), and they will wear out after about 2,000,000 write cycles. http://compreviews.about.com/od/storage/a/SSD.htm http://tathya.net/wp-content/uploads/2010/03/Soli dStateHardDrive.jpg http://laptoping.com/wp-content/transcend_SSD_32 GB.jpg
The motherboard is a computers primary circuit board that holds all of the computer chips and links them together. http://www.newegg.com/Product/ImageGallery.aspx?CurImage=13-130-234-TS&SpinSet=13-130-234-SS&ISList=13-130-234-234&Depa=0&WaterMark=1&Description=MSI%20G31TM-P21%20LGA%20775%20Intel%20G31%20Micro%20ATX%20Intel%20Motherboard
A video is important to a computer because without one you would not be able to display any graphics that the computer is trying to display. Also, video cards come in two different types: separate expansion cards, and video cards that are imbedded into the motherboard. The main difference between the two types of video cards is that the separate cards are better because they are faster than the ones that come with the motherboard. http://students.apsweb.org/~amunguia/hardware/video%20card.jpg http://upload.wikimedia.org/wikipedia/commons/c/c5/Gpu-connect ions.png
http://www.cybercafelatino.com/wp-content/uploads/2010/02/Sound-Card.jpg http://www.wisegeek.com/what-is-a-sound-card.htm http://142.22.38.253/kn owledgeroot/uploads/image/sound_card.jpg Sound c ards can be built into the motherboard, but usual ly they are disabled for a better quality add-on sound card. T he sound cards that are built into the motherboard are for people who are the “average” user, but the add-on card is more for professional sound editing or people that want surpurb sound quality. Sound cards can range in price from $15-$400.
http://en.wikipedia.org/wiki/File:Asus_CD-ROM_drive.jpg http://www.hardwarezone.com/img/data/articles/2005/1558 /optical_Drive.jpg Optical disk drives are important because they are the primarily media to install new programs or files to your computer.
A computer monitor is also the part of the computer that displays the graphics that are produced from a computer. There are two types of monitors that are widely used today. The two major types of monitors are the CRT monitor, & LCD monitor display monitor. All of these two monitors do the same thing, but in a different way. There are two other types of monitor but they are not widely used today. The first type is a Plasma monitor, and a Projection type monitor. Plasma monitors are not widely used because they are expensive, they are usually only available in sizes on 40 inches of bigger, and they are suspitable to screen burn in. ALso main people do not use projectors and a display monitor because they have a low screen resolution, and have very large screens. Projectors are mainly used for presenting or showing a movie to a large group of people. http://star-techcentral.com/archives/2007/5/29/prodit/Philips_1b.jpg http://www.samsung.com/us/system/consumer/product/2009/08/22/ls24kiz kfvza/2494SW_Front_Medium.jpg h h h
Screen burn in can cause irreversible damage to a computer screen. Screen burn in mostly occurs on Plasma monitors and CRT monitors, but any monitor is suspitable to screen burn in http://upload.wikimedia.org/wikipedia/commons/4/45/Screen_burn_screen_off.png http://en.wikipedia.org/wiki/File:Emerson-McDonalds_CNN_Burn-In.jpg
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