Buying a PC
Contents No table of contents entries found. Buying a PC XPS 630 Desktop is not portable; it's a desktop which you could use at home or office. There are many advantages in buying this PC for example if you buy this PC online you could get it at a price of $2299, which I think is a much better price than the actual price which would be offered at a showroom. A desktop is actually a metaphor used to describe file systems. A desktop can be a place where you could make file, folders, icons, pictures and various types of documents. This is an example of a desktop, where you can see many icons, or shortcuts to applications, documents etc. XPS 630 would provide you with Windows Vista Home Premium, which would actually look like the picture shown on the left. Windows Vista is the next progression of the Microsoft operating system. Vista is can also be called as an upgrade of Windows XP. Vista offers progression on reliability, security, performance and management. XPS 630 has Intel Core 2 Quad Processor. This might be a very big word but it actually means it's a Quad- Core processor which is a type of multi-core technology that includes two separate dual cores; in this case core 1 and 2 would share a memory cache. Intel is a well known world's largest manufacturer of computer chips. Another advantage of XPS 630 includes 4GB 662 MHz DDR2 SDRAM memory. GB is an abbreviation
Electronics… did it change the way we are living nowadays?
Practical Application of Electronics To Communications A Research Paper In Partial Fulfillment of the Subject English 102 Submitted to: Ms. Cherry Lyn Porras Submitted by: Roy Anthony M. Saniana ECE 1-B `I. INTRODUCTION A. Statement of the Problem and Objectives Electronics... did it change the way we are living nowadays? Electronics is a branch of physical science that studies the flow of electrons through vacuums, gases, and semi-conductors. In fact, electronic devices use vacuums, gases, or semi-conductors to control the flow of electrons very precisely. But how does electronics really work on electronic devices, especially to communication devices such as TV and radio? What practical application would it produce to communication? How important is electronic communication to our life? These are the questions that this research aims to answer. Thus, the objective of this study is to enlighten us on how big a part electronics plays on our daily lives. B. Significance of the Study This study will help people analyze and understand the part played by electronics on devices and appliances such as TV, radio, phones and those which helps transmits communications. In the present, almost all our appliances use electronics and we are enjoying its service but many of us don't know how it works. For most people, this is a big mystery, or some just choose to
Short story - Speed Demon.
SHORT STORY. SPEED DEMON. It was early, but he could hack it. People were paying good money for him to do this job and he was going to make damn sure that he did it right. The morning dew glistened on his track, and a hazy evanescence could be seen arising from the cold, hard tarmac. He had just completed a previous lap of this, his, circuit, he owned that circuit, it was his, and he made sure that it was his by beating off any rivals who even dared to try and complete it. Waiting...waiting... He was ready. The huge behemoth that was his combustion engine waited, guzzling up diesel as if there was no such thing as the greenhouse effect. His V-12, twin-turbine engine gave off an almost deafening growl. What it lacked in manoeuvrability it made up for in pure power. His hand twitched, his hand reached coolly for the cold hard shaft that was his gear stick, he was keeping the nervousness he felt inside of him as if he were a world-class poker player. He was ready. The light cycle started - red. He had been waiting for this moment for what had seen to be an age. Amber. Glistening, a droplet of sweat condescended down his forehead, finally resting upon his brow. Green. The wheels tore away, as if circular saws with the way that they ripped apart the road from underneath all eight of them. A split second was all that was needed for him to change from first to second gear. He
electronics situations
GCSE Electronic Products Research The next stage of my project is to research the following areas: ? Market ? Electronics ? Housing Market Research I am going to look at the Market to see if there are any products similar to my device. I will look to see if the product exists and is cheaper than what I could make it for because of mass production techniques. I will also analyse any existing products similar to mine and look at the good parts and bad parts and learn off them. After looking at the products similar to mine I will be able to decide what I should put into my device and what not to include. This game is purely a luck game that requires the player to pull a small trigger, when a metal ball is placed on top of the trigger it will be shot up to the top of the nails. From there it will bounce randomly off the nails and drop down to a column, different columns are worth different amounts of points. The game requires no batteries as it is not an electronic game. The size is 6.5 inches wide and 13 inches long. The game allows a player to fire 10 balls and when finished the player must count up the points and then to restart the game must remove a wooden bar which releases the balls from the columns. The game isn't popular on the internet as I only found it on two websites one of which is www.edirectory.co.uk which has the game down for a price of £23.10
3. electronics
GCSE Electronic Products Electronics Research Having researched the market for my device I will now look at the electronics for my device. All electronic devices can be broken into a simple system as you can see bellow. An example to show how electronic devices can be broken down into these three simple categories is a project I did in year 7. The project was a fan that used a thermistor to control if the fan is on or off . To the left is a picture of the fan as a finished product however, it is missing its motor and propeller in the picture. The diagram bellow is using the fan project as an example of how electronic devices can be broken down into a simple diagram. The diagram shows that the input to the fan is temperature, measured by a thermistor, which in series with variable type of resistor makes a potential divider. The control is a type of switching amplifier which in this case is a transistor; I used two in the fan set out as a Darlington pair. The output is the movement of the propeller which is moved by a motor. My system This diagram shows my system, broken down into input, control, output. The input is when a ball passes through a column which switches a switch. The control is amplification which is monostable, astable and a counter and finally the output is the visual LED display which shows the points scored. GCSE Electronic Products
Product Analysis - Cree LED Torch
Product Analysis: Cree LED Torch Form: The Longer section makes it easier to yet it is still compact, which allows it to be transported around or kept in a bag/pocket. The cylindrical design as well as making it easy to hold, makes it stronger as it is hard to compress this shape. A raised lip above the lens protects the glass from being scratched or cracked as well as making it easier to stand up. Materials and Component Requirement: The Cree LED should efficiently emit 200 lumens. The wires are made of conductive materials to allow electricity to flow through it. Inside there is a battery holder, which holds 3 AAA batteries to provide power for the light. The reflective cone should also spread out the light from the one Cree LED. For Materials, the outside case is made out of metal for strength and the handle area is textured for better grip. The pushbutton switch enables the torch to cycle between 3 different modes (low intensity light, high intensity light and strobe lighting) and off. Sustainability: The aluminium housing is widely recyclable, and Cree LEDs can run for several thousand hours meaning they hardly need replacing, meaning less waste going into land fills. However, the batteries aren’t rechargeable, and will have to be disposed when the batteries depleted. The life span of the product in whole is very long compared to other torches because of the type
Comparing differnt types of batteries
Power Scalectrix Lap Counter Project Analyse The scalectrix lap counter requires constant low voltage power, for it to work. We cannot use the mains power, as its dangerous and can be fatal if not used correctly. As the scalectrix user age is around 5 to 14. Using direct mains power will be even more dangerous; however we can use transformers to lower the voltage and current. Also we can use batteries to power the project. The many types of batteries out there in the market, these include AA, AAA, C, D, 9v. Also lantern and car can used, however there are less portable and heavier. One major advantage using batteries over mains power is, the counter can be used anywhere. Batteries Zinc Carbon – One of the most basic batteries also it’s a cheaper alternative to the alkaline. This batteries isn’t suitable for projects that require high output also the voltage drops during use. Alkaline – The most commonly used battery and longer life than the zinc carbon batteries. However it will cost you more to buy alkaline batteries than the zinc. Another advantage of the alkaline battery, its voltage level doesn’t fall as quickly as the zinc carbon battery also has much higher capacity which means it’ll provides more amps per hour. Silver Oxide – Very small 1.5V button cell commonly used in watches, clocks, calculators, cameras, and many miniaturised electronics
maglite attachment
Task or Operation Hazard - Potential Harm Pr Se Ri Control Measures Pr Se Ri Walking in workshop May trip up 3 Low Warning signs and orders 2 Low Vacuum Forming May burn yourself 3 3 Med Supervisor looking out 3 low Facing off for aluminium tube Hair or tie may get trapped in machine 2 5 Med Order to keep loose ends tied 5 low Cutting wood Cut finger off 2 3 Low Be careful signs 5 low Soldering electrocute yourself 3 6 High Power controlled equipment 2 5 Med Using wood Getting a Splinter 6 Low Gloves 3 Low Drilling Hair or tie may get trapped in machine 2 5 Med Order to keep loose ends tied 5 low Sanding Scratching yourself 5 2 Med Ware protective items 2 low Probability (Pr) Severity (Se) (Of exposure to or creating a hazard) (Including damage to machinery/Equipment) = Very unlikely = Trivial injuries 2= Slight probability 2= Minor Injuries 3= Greater probability 3= Major injuries - 1 person 4= More probable 4= Major injuries - Several people 5= Very likely 5= Death of 1 person 6= Almost certain 6= Multiple deaths Risk Rating (Ri) = Pr x Se -8 Low: No further action required 9-18 Medium: Take further action to reduce risk 9-37 High: Take immediate action to reduce danger Reason: How the test was carried out: Results: Successful or Unsuccessful: Hold the torch securely. We got
Single Slit and Double Slit Diffraction
Single Slit and Double Slit Diffraction Objective To observe the diffraction patterns created by laser light passing through a single slit and double slit and to verify the equation which predicts the diffraction patterns in theory. Mathematical Theory n ? = d sin(?) n ? = d Procedure . Align a laser, a diffraction disk, and a light sensor mounted on a rotary motion sensor. 2. Allow the laser to pass through the diffraction disk. 3. Run the light sensor attached to the rotary motion sensor across the diffraction pattern to detect the intensity of light at different positions along the pattern. 4. Record the displacement measured by the rotary motion sensor and the intensity of light measured by the light sensor. Data Laser wavelength - 6.7x10-7 meters Distance from the slit to the light sensor - 0.72 meters Single slit diffraction pattern with a 2x10-5 m wide slit Single slit diffraction pattern with a 4x10-5 m wide slit Single slit diffraction pattern with a 8x10-5 m wide slit Double slit diffraction pattern with a 4x10-5 m wide slit and 2.5x10-4 m between slits Double slit diffraction pattern with a 4x10-5 m wide slit and 5.0x10-4 m between slits Double slit diffraction pattern with a 8x10-5 m wide slit and 2.5x10-4 m between slits Data Analysis By observing the characteristics of the diffraction patterns produced, one can see the difference between
Aim: 'Build a sensor circuit to test the proximity of an object using a light detector to detect light from a bulb reflected f
Aim: 'Build a sensor circuit to test the proximity of an object using a light detector to detect light from a bulb reflected from an object.' In this experiment I am going to build a sensor circuit using an LDR, I will then calibrate the sensor and use my results to test and improve the sensor circuit. The LDR works by having a very high resistance when the light intensity is low, which does not allow current to flow through the potential divider circuit. When the light intensity increases significantly, the resistance reduces dramatically and current can flow through the circuit. The resistor within a circuit can be changed to make the circuit more sensitive. The first thing I had to do was to test two different sensors to see which one had better sensitivity. From my results I could see that the LDR had the biggest input to output difference, meaning it was more sensitive than the photodiode. Next, I had to test which resistance would have the maximum output to input difference and thus give the LDR maximum sensitivity, shown in table A: Resistance/k? V out/V - Light on V out/V - Light off Difference/V 470 7.94 6.39 .55 220 7.93 6.86 .07 00 7.91 6.11 .80 47 7.88 4.94 2.94 22 7.81 3.51 4.30 0 7.66 2.10 5.56 From my results in table A I concluded that the 10k ? setting gave the maximum sensitivity as it had the biggest output to input