My aim for this project is to design and construct a fully functioning alarm clock.
A2 Electronics Alarm Clock By Abdul Wali Chowdhury Alarm Clock Aim My aim for this project is to design and construct a fully functioning alarm clock. Investigation To construct the alarm clock I had to investigate two factors, how bright the seven-segment display would be and how loud the alarm would sound. To find out the brightness of the seven-segment display I used a light level meter and placed the blackout tube over a powered seven-segment display, the light level meter read 0.80 lux. To find out how loud the alarm would be I used a sound detector, my mobile and a meter ruler. I placed the sound detector one meter away from my mobile; the volume of my mobile was set to its highest, the sound meter read 87 DB. This is a reasonable sound level and I would like my alarm to sound somewhere near this number. I had very little experience with micro controllers, so to get to grips with the coding and wiring up of the micro controller I decided to make something similar to how I would make the Alarm Clock but much simpler like making one seven segment display count from 0 to 9. Below is the pin out for the circuit. Below is the code I used. Dim T As Long Dim I As Integer Out $3a , $ff Do For I = 0 To 9 Out $3b , I For T = 1 To 100000 Next T Next I Loop By doing this investigation it enabled me to have a clearer idea of how I would design and make my
Advantages of CAD against traditonal methods of design.
Advantages of CAD against traditional methods: CAD or computer aided design has revolutionised the way companies design products; cad is a significant improvement to using drawing boards as saves time and money in the design of new products Cad facilitates designs to be produced at a faster rate due to such tools like copy, mirror, rotate, snapping tools, smart dimensions and less repetition of parts this reduces the design time because data can be added to the drawing very quickly in comparison to having to hand draw every dimension or part. Complex geometry is easy to add or create by the innovative tools like: splines, coincident lines, tangent arks, shelling and extruded cut these tools enable the designer to produce a complex and detailed product with all geometry accurate. The drawings made in CAD are very accurate because lines can be offset and drawn to a very accurate level (1/100mm). Data can also be accurate as lines can automatically be snapped onto centre points or an excess line can be trimmed off once the geometry has been designed therefore tidying up the drawing. Dimensioning is vital for designers as it gives the proportion for the model which on cad can be drawn to real size without using scales to shrink the design for paper which can cause problems later. Dimensions can be added in an instant with two clicks. Many modern cad packages automatically
Explain the fundamental ways in which technical textiles and smart fibres differ. Using examples explain how these two types of textiles can benefit users in the 21st century.
Explain the fundamental ways in which technical textiles and smart fibres differ. Using examples explain how these two types of textiles can benefit users in the 21st century. A small proportion of technical textiles are manufactured from high-end fibres like Kevlar or Nomex. Most technical textiles are made from everyday fibres such as polyester, polypropylene, polyamide or acrylic. Gore-Tex® fabrics are created by laminating the Gore-Tex® membrane to high performance textiles, then sealing them with a solution for guaranteed waterproof protection. Phosphorescent textiles are a class of luminescent materials that show long-lasting bright afterglow in dark after charged by a source of light capable of exciting the material to a persistent excited state. Some other technical textiles are Scotchlite, electronic textiles, the smart bra, microfibres, Nano-fibres and Skintex skincare. Smart fibres have been developed to provide functions that will respond to and protect our bodies. They can be said to be 'intelligent' because of their ability to react to external stimuli or changes in the environment without human intervention. Smart fibres are split into four categories; Biomimetic fibres that mimic nature, Shape Memory textiles, Sense and Track fibres and Chromatic fibres. Biomimetic fibres mimic good design in nature; some of these include Fastskin by Speedo and a fabric by
Describe the performance of characteristics of eggs.
Camille Rivera Describe the performance of characteristics of eggs. (25 marks) Egg white and yolk contain protein. Ovalbumin is present in egg white, however globulin and albumin are also present in a very small amount. Whereas egg yolk contains protein in the form of lipoproteins, which are a combination of proteins and lipids. The most important complex lipid in egg yolk is lecithin. Lecithin gives the egg yolk the properties of a stable emulsion. The fat molecules in the egg yolk are held in an emulsion by lecithin. Eggs have three main performance characteristics and they a coagulation, which includes setting, binding, coating, thickening, enriching and glazing, secondly they can be whisked to create foams and aerate mixtures and called aeration and lastly emulsifiers. Coagulation is the process in which proteins change from their natural liquid state into a gel or a solid. This happens because each protein molecule is constructed from long chains of amino acids joined by peptide bonds. The bonds are weak and when heat, acid or mechanical action is applied they start to break. The changes are permanent. When the protein changes it physical structure when it coagulates is called denaturation. Syneresis can occur when the egg is overcooked. This is when the texture becomes porous as the protein shrinks and pockets of water are left in the product. Between
Uses For Polymers - my bullet proof vest design.
Block-Tex Chloride Produced by Paulos Zerezghi Introduction Greetings. My name is Paulos Zerezghi and I have now invented a feature which may change the world. I have been inspired to create this due to all the wars and crimes in our world today. My creation is Full Bullet-Proof Clothing. I have combined casual clothing which may be also used for the military. This is an original idea which has not been created. This Bullet-Proof clothing would be fully-compatible for police, security and military and also ordinary citizens who may be in need of secured clothing for safety reasons. My revolutionary invention will be named Block-Tex or scientific name Block-Tex Chloride. The chloride from my invention, is formed when the element chlorine – a halogen picks up one electron to form an anion. My creation has upgraded the classic ‘bulletproof vest’ which has been worn by different forms of security at the moment. I believe that this soon will not be the case. The full Block-Tex jacket is super-light weighing at only 115g allowing people to run and walk easier which may be very useful for police and the military. Also, Block-Tex clothing will provide tough material to prevent bullets penetrating through. Amazingly, Block-Tex even prevents blades piercing through and shrapnel from explosions. Manufacturing Block-Tex Chloride is synthesized in solution from the
Investigating the effects of heat treatment on metals.
Heat treatment of metals Aim: To find out how different heat treatment Theory and prediction Metals have various uses in a wide range of industry, where the properties of each metal determine what the metal will be used for. When a metal properties need to be changed to satisfy particular needs, it can be modified by processing the metals with treatments such as cold working and heat treatments. Structure of metals Metals are made from their ore, at extremely high temperature. In this form, metals are in a liquid form. The liquid metals are cast by pouring it into moulds where it is cools down and solidifies. When metals are frozen, crystals start forming. These crystals begin to form throughout the metal, where they keep they keep rapidly growing until they reach a neighboring growing crystal structure. These crystals are called grains, where crystals that meet with one another are called grain boundary. Dislocation Dislocation are formed when defects are found in the crystal structures. This is often caused by when atoms are missing in a layer, This is shown in figure one. Apparatus -Beaker -250 cm3 of water -Tongs -Pliers -G. Clamp -Safety googles -Heatproof mat -Two blocks of wood -Marker/felt tip pen -Ruler Method Quenching Safety requirement: Eye protection needs to be worn during this procedure Firstly with cold tap water fill up 250cm3
Why is quality important for a business?
Why is quality important for a business? The quality of the product that is being made is very important to a company what ever they are making. The higher the quality if a product the more the company can charge for that product. If the company makes a low quality produced that is not very good people will not buy it, also if people can find a similar product at a lower price and higher quality they will buy that. When a business makes a product they must decide on the following things: · what is the lowest level of quality that is acceptable for the product? · who is responsible for the quality control · a method of quality control that will be used that dose not effect the cost to severally What is the BSI? The BSI (British Standards Insatiate) is responsible for setting standards that products must be made to. They set standards for very product that is made, this means that products are made to a high standard. When a product complies with the BSI standards it is given a kite mark, this tells the consumer that product meets their standards. Methods of quality control Methods of quality control Traditional TMQ (Total quality management) Description In this method of quality control, the quality is checked at the end of chain of production. In this method it left to one person to check the product. Also in this method the workers on a piece