Tuesday 11 September 2012

Difference Between INTEL and AMD core Processor?????

Advanced Micro Devices (AMD) and Intel are two different companies that produce motherboards and central processing units (CPUs) found within personal computers (PC). The CPU is probably the most important part of the computer, as it is where most calculations take place that run computer programs and systems. The speed with which a CPU can process these calculations is usually given in megahertz (MHz) or gigahertz (GHz). Motherboards provide the circuitry for all computers to function. While both AMD and Intel offer a range of different CPUs with differing speed processing speeds and price levels, Intel owns a greater percentage of market share than AMD. Both companies have been making computer components for decades, and are said to be the leaders in research and development in the computer industry for this field. Since these are two different companies, it can be difficult to compare the products created by each of them. One of most commonly listed differences is the fact that AMD tends to be cheaper than Intel. Intel has been the established leader for producing circuit boards and CPUs from the start. It is sai
d that AMD has been influenced by the prices and technological advances of Intel. Not only does AMD produce their own lines chips and motherboards, they also produce cloned versions of Intel products. Some people choose AMD over Intel because the AMD and Intel chips and circuit boards provide almost identical functionality, but the AMD version is about half the price of the Intel one. Besides cost, the other key differences between AMD and Intel processors are the clock speed and the socket used to connect the processor to the computer. The clock speed is the number of operations a computer can perform in a clock cycle, which is usually one second. Due to design differences, Intel processors are usually faster than AMD ones, but AMD processors are more efficient. As such, for each AMD and Intel processor, the Intel version is usually slightly faster than its AMD counterpart. The difference in sockets is an important factor to consider. Not only do the connectors not match up, the electrical characteristics and instructions used are different. This is important if anything were to happen to the processor in a computer. If the processor had to be replaced, it would have to be replaced by the same brand, either AMD or Intel. Processors can be upgraded, but again, the same brand must be used when making the replacement.

Wednesday 22 August 2012

SELF DRIVING TECHNOLOGY-THE CAR FOR THE FUTURE

An autonomous vehicle is fundamentally defined as a passenger vehicle that drives by itself. An autonomous vehicle is also referred to as an autopilot, driverless car, auto-drive car, or automated guided vehicle. i
n the future, automated systems will help to avoid accidents and reduce congestion. The future vehicles will be capable of determining the best route and warn each other about the conditions ahead.Google has been working on it’s self driving car technology, where the user is required to enter an address in Google maps, after which the system gathers information from Google Street View and combines it with artificial intelligence software. The software includes information from video cameras in car, a LIDAR sensor on top of vehicle, radar sensors in front and a position sensor attached to one of the rear wheels that helps locate the car’s position on map. These sensors aid the car in maintaining distance with surrounding vehicles/objects. The control mechanism of an autonomous car consists of three main blocks as shown below: 1. Sensors -laser sensors -cameras -radars -ultrasonic sensors -GPS, etc. 2. Logic Processing unitS -Software -Decision making -Checking functionality -User interface 3. Mechanical control systems -Consists of servo motors and relays -Driving wheel control -Brake control -Throttle control, etc. Artificial Intelligence Software: Artificial intelligence is the making of intelligent machines, especially intelligent computer programs. It is related to the similar task of using computers to understand human intelligence. This system exhibits human intelligence and behaviour include robots, expert systems, voice recognition, natural language processing, face recognition, handwriting recognition, game intelligence, artificial creativity and more. By this technology both google map and google street view are interrelated. Google Map: Google Maps is a Google service offering powerful, user-friendly mapping technology and local business information-including business locations, contact information, and driving directions. Google Street View: Google Street View (GSV) has rapidly expanded to provide street-level images of entire cities all around the world. The number and density of geo-positioned images available make this service truly unprecedented. A Street View user can wander through city streets, enabling a wide range of uses such as scouting a neighbourhood, or finding specific items such as bike racks or mail boxes. LIDAR Sensor: Light Detection And Ranging is an optical remote sensing technology that can measure the distance to, or other properties of a target by illuminating the target with light, often using pulses from a laser. LIDAR uses ultraviolet, visible, or near infrared light to image objects and can be used with a wide range of targets, including non-metallic objects, rocks, rain, chemical compounds, aerosols, clouds and even single molecules. A narrow laser beam can be used to map physical features with very high resolution. Position Sensor: This device provides the latitude, longitude and altitude together with the corresponding standard deviation and the standard NMEA messages with a frequency of 5 Hz. When geostationary satellites providing the GPS drift correction are visible from the car, the unit enters the differential GPS mode (high precision GPS). When no correction signal is available, the device outputs standard precision GPS. Radar Sensor: Radar (Radio Detection And Ranging) is an object-detection system which uses radio waves to determine the range, altitude, direction, or speed of objects. It can be used to detect aircraft, ships, spacecraft, guided missiles, motor vehicles, weather formations, and terrain. The radar dish or antenna transmits pulses of radio waves or microwaves which bounce off any object in their path. The object returns a tiny part of the wave’s energy to a dish or antenna which is usually located at the same site as the transmitter.