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Computer History SGP
- 1. The Evolution of Computers Jacob Sedgwick http://upload.wikimedia.org/wikipe dia/commons/5/5a/Schickardmaschi ne.jpg http://images.appl e.com/imac/imag es/overview_hero 1_20091020.png
- 2. Thesis • 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.
- 6. Part 1 The Evolution of the Computer http://images.apple.com/macbook pro/images/design- hero20090915.jpg
- 7. Invention of the First Computer • The design for the first computer was made by Wilhelm Schockard • Schockard’s computer was a calculating machine designed to calculate astronomical tables • His machine also could add or subtract six digit numbers http://upload.wikimedia.org /wikipedia/commons/5/5a/S chickardmaschine.jpg
- 8. The Invention of the First Programmable Computer • The first programmable computer was invented in May 1941 by Konrad Zuse • Zuse’s computer was used to solve complicated math http://upload.wikimedia.org/wikipedia/commons/4/ 4c/Z3_Deutsches_Museum.JPG
- 9. • Zuse’s Computer weighted over 2,000 pounds • The internal parts are similar to the modern computer The Invention of the First Programmable Computer
- 10. Early Computers • Early computers were all hand built • They were slow and could only perform simple problems • They were expensive http://upload.wikimedia.org/wikip edia/commons/2/27/Apple_I.jpg
- 11. Modern Computers Today • Most computers made today are cheap, portable, & lightweight • Compared to computers from the 1970s, computers today are http://i.dell.com/resize.a spx/inspiron-1012-right- black-standard-500/149
- 13. Part 2 Working Safely When Repairing a Computer
- 14. Work Environment • Always work in a clean, dusk free environment • When working with circuit boards always wear a anti-static wrist strap • Lay all parts removed on an antistatic mat
- 15. Always Unplug The Computer • Unplugging a computer helps protect you from a potential deadly electric shock
- 16. Remove all Hand Jewelry • Most Hand Jewelry is conductive which can result in a electrical shock • Hand jewelry should also be removed when working with moving parts
- 17. Avoid Capacitors • Capacitors are miniature “Batteries” that can hold a electrical charge after a computer is disconnected from power • When working on a computer always disconnect the power then wait a few minutes for the capacitors to discharge
- 18. Never Attempt to Service Non-Serviceable Parts • Non-serviceable parts are parts that are not designed to be replaced by anybody except the manufacturer Examples •Optical Drives •Hard Drives •Monitors •Computer Power Supply’s http://img.alibaba. com/photo/116769 61/MDT_Hard_Disk _Drive.jpg http://maven.smith.edu/~orou rke/103/CSC103_Pictures_files /CSC103_PowerSupply.jpg
- 19. Part 3 Basic Computer Components http://img.alibaba.c om/photo/1096938 5/Secound_Hand_R AM_Graphic_Card_ CD_ROM_CD_RW_P ower_Supply.jpg
- 20. Major Computer Components • CPU • RAM • Hard Drive • Motherboard • Computer Case • Video Card • Sound Card • CD-ROM • Computer Case • Monitor
- 21. Central Processing Unit (CPU) • It is the most important element of a computer • The CPU is the brain of the computer • CPU is the part of the computer that controls and executes all tasks that the computer is performing http://www.product- reviews.net/wp- content/userimages/2008/05 /budget-45nm-penryn-cpu.jpg
- 22. Random-Access Memory (RAM) • RAM is a type of computer chip that stores all of the dynamic data on the computer • By storing all of your dynamic date in RAM, it makes data access faster than a hard drive http://im3.ebidst. com/upload_big/6 /4/4/1214619692- 30617-0.jpg
- 23. Why is RAM important? • RAM is important because the lack of RAM is usually the main bottle neck in computer performance
- 24. Hard Disk Drive • A hard drive is a device that magnetically stores data on a spinning disk • It is a non-volatile type of storage http://img16.imageshack.u s/i/1020064.jpg/ http://globaltech- ow.com/Products/Stor age%20devices/images /TTB.jpg
- 25. Motherboard • It is a printed circuit board that holds all of the principle components that make up a computer http://www.newegg.c om/Product/ImageGal lery.aspx?CurImage=1 3-130-234- TS&SpinSet=13-130- 234-SS&ISList=13-130- 234-S01%2c13-130- 234-S02%2c13-130-
- 26. Video Card • It is a expansion card that generates images to be displayed on a monitor • Many modern video cards have capabilities to display 3D images, and live TV http://students.apsweb.or g/~amunguia/hardware/vi deo%20card.jpg
- 27. Sound Card • It is a card in the computer case that translates computer code into audio signals • Most computers have sound cards built into the motherboard, but some require a separate card http://www.cybercafelatino.c om/wp- content/uploads/2010/02/So und-Card.jpg
- 28. Optical Disk Drive • It is a type of disk drive that uses laser light to read to and from disks • Most drives today commonly can read & write to disks • The most common name for a optical disk drive are: CD burner & DVD burner http://en.wikipedia.org/wi ki/File:Asus_CD- ROM_drive.jpg http://www.hardw arezone.com/img/ data/articles/2005/ 1558/optical_Drive .jpg
- 29. Computer Case • It is the enclosure that holds all the main components for a computer
- 31. Major Certifications Available in the Computer Field
- 32. Certifications • A+ Certification • CompTIA Network+ • Cisco Certified Network Associate (CCNA) • Cisco Certified Networking Professional (CCNP)
- 33. CompTIA A+ Certification • Most Popular entry level certification • Certification is about the fundamentals about Computer, Network, & Security technology
- 34. CompTIA A+ Certification • Certification for people with 6 months or less in computer service • Average salary with A+ certification is about $31,000 a year in 2005
- 35. CompTIA Network+ • Certification proves a technicians competency of maintaining, installing, troubleshooting, & configuring a basic computer network • Average salary a year is $38,000
- 36. Cisco Certified Network Associate (CCNA) • Certificate is a major milestone for many IT careers • Certification designed for people who install, operate, or configure Cisco routers or switches • Average Yearly salary is $63,000
- 37. Cisco Certified Networking Professional (CCNP) • The CCNP certification is designed to demonstrate advanced skills in networking computers, but especially in installation and support in medium sized networks. • Yearly salary is $73,000
Editor's Notes
- 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. Schpckard 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 only 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. Zuse’s original computer was destroyed in 1943 when the allies bombed Berlin, so there are only replicas available. All photos, and original documents of the machine were destroyed when the Allies bombed Berlin. 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.
- 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.
- 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 computers with the low cost and portability, there are many disadvantages when it comes to small and cheap computer. First when you have a small computer, there is less space, and the components become smaller and the electronics tend to become very hot and overheat. 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, in the 1900s when computers were first invented they consumed about 20,000 watts of electricity, and today computers can use as little as 30 watts of power
- 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 an 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.
- 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
- 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.
- Having enough RAM is important because if you do not have enough them you computer will suffer from some serious computer performance issues. Also,
- A hard drive is a non-volatile type of storage that magnetically stores data on a platter. The hard drive is also a important part to a computer because it stores all of the user and required information. 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 lose everything on the disk. Even the smallest piece of dusk could cause irreparable damage.
- The motherboard is a computers primary circuit board that which all of the components components and perfirerals connect to.
- 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 card is that the separate cards are better because you can pick the type of card you want want.
- These are just some of the major Industry recognized certifications in order to be a networking professional. The four listed above are just some of the certifications that can give you a high chance of getting a job. These certifications are listed in order from lowest to highest from the lowest earning to lowest salary, and the highest earning the highest earned salary.
- The CompTIA A+ certification is an industry standard certification for computer support technicians. The A+ certification proves the competence in areas such as installation, preventative maintenance, security, troubleshooting, and networking. You also have to be excellent in customer service skills, and the ability to work good with people.
- The CCNP mainly focuses on the scalable of switching & routing. Also, to obtain this certification you must complete any of the two of the four certifications.