Technology articles

Introduction

In this job, we are going to present some articles about technology with the aim of creating a global idea about the importance of technology in human’s life. So, the objective of this project is to create awareness in the people with a short presentation about technology and a little questionnaire of the topic we give you. Technology is a basic thing we have in the world, itprovides the necessary elements for making a better society and also a better world.

Difference Between Analog and Digital?

Analog and Digital
As a technology, analog is the process of taking an audio or video signal (the human voice) and translating it into electronic pulses. Digital on the other hand is breaking the signal into a binary format where the audio or video data is represented bya series of "1"s and "0"s. Simple enough when it's the deviceanalog or digital phone, fax, modem, or likewisethat does all the converting for you.

Digital versus analog can refer to method of input, data storage and transfer, the internal working of an instrument, and the kind of display. The word comes from the same source as the word digit and digitus.
The digital technology breaks yourvoice (or television) signal into binary code a series of 1s and 0s transfers it to the other end where another device (phone, modem or TV) takes all the numbers and reassembles them into the original signal. The beauty of digital is that it knows what it should be when it reaches the end of the transmission. That way, it can correct any errors that may have occurred in the data transfer. What doesall that mean to you? Clarity. In most cases, you'll get distortion-free conversations and clearer TV pictures. The nature of digital technology allows it to cram lots of those 1s and 0s together into the same space an analog signal uses. Like your button-rich phone at work or your 200-plus digital cable service, that means more features can be crammed into the digital signal. Digital offers betterclarity, but analog gives you richer quality. Digital like the VCR or the CD is coming down in cost and coming out in everything from cell phones to satellite dishes.

Types of Generators

Generators are used for the generation of electricity and they ensure that most of the essential appliances can be run whenever there is a power outage. Generators of different wattage capacities can be usedaccording to the needs of the individual. The choice of buying the right type of generator depends upon a number of factors like the wattage capacity, voltage ratings, fuel type, fuel efficiency, noise level, portability and price – a prudent choice can only be made if you knew what to look for.

Stand By – Standby generators provide backup power in homes and offices and are permanentlyinstalled outside the house or office building. They are plugged into the electric circuits or home wiring. – The unit turns itself on and off automatically. They can automatically detect disruption in the usual electric supply and begin supplying power within a few seconds. – Propane and natural gas offer a safe, long-term fuel supply and are more environment friendly than gasoline or diesel fuels. –Like any motor, a generator motor creates quite a bit of heat and needs a cooling system to prevent overheating. Standby generators can be either air-cooled or liquid-cooled. The major difference is that air-cooled systems are louder and not quite as effective. Liquid cooled systems are quieter and more dependable – and also more expensive to purchase and to maintain.

Portable – Portablegenerators are usually used in places where there is no power supply such as construction sites, camps, etc. These generators are sufficient to run appliances like televisions, refrigerators, sump pumps and furnaces. – Portable systems are wheeled units that require to roll the generator outside, start it up, and hook it up to a power inlet box Portable generators supply electricity to selected...