How Does a Computer Works

This flyer is about computers and how they work.

Computers

Now computers are used by almost everyone. Computers are in schools and airports. Computers are getting a lot more popular and useful. The world is now basically surrounded by technology and electronic devices.

Drives

A USB is a type of drive. A USB is a storage devise that can hold up to 64 GB which is 30474 photos. USB stands for Universal Serial Bus.


The floppy disk is a drive too, but it holds less data than a USB. The floppy disk can only hold 1.44 MB and a photo is about 4 or more MB. That means a floppy disk can't store any photos.


A HDD is a also a drive a lot bigger than the USB but doesn't mean it can hold more. HDD stands for Hard Disk Drive.


A SSD is a drive. It stands for Solid State Drive.

Monitors

Monitors are output devices that displays information on to the screen by a video card. A video card is a type of card that sends information or data to a monitor. Monitor comes in two important types LCD and CRT. The CRT is a monitor witch looks like an old-fashion television with a extra back piece to process the information.


The LCD does not have the extra back piece. it's thinner and uses less energy it also has greater data quality. The good thing about LCD is that it is thinner and the data is better quality than the CRT. The good things about the CRT it that the monitor is a lot cheaper than a LCD. The bad sides of the CRT monitor is that it works slow and the data quality isn't as good as the LCD. the bad things about the LCD monitor is that they are a lot more expensive than the CTR.

CPU

The CPU is basically the brain of the computer it's were most of the calculations are at. CPU stands for Central Processing Unit. There are two important types of CPU in computers today they are the 32 bit processor and the 64 bit processor. The difference of the 32 bit processor and the 64 bit processor is how many calculations in a second it can do.

RAM/ROM

RAM is data that is not permanently saved on to your computer and when you exit or power off your computer the data will be erased. ROM is data that is permanently saved on to your computer and when you exit or power off your computer the data will still be saved onto your computer.

Motherboards

The motherboard is basically the circuit that lets the RAM and ROM the CPU and other parts of the computer to join or communicate together.

Inputs and Outputs

Input are like mouses and keyboard. While Monitors and printers are Output devices. An input devise is any thing that sends data or information to the computer. An output devise is anything that prints or takes out the information or data from the computer. There a lots of input and output devices around us.

Touch screens

A touch screen is a type of screen that is controllable without a mouse like phones,i pads and so on. A touch screen is useful because on the older phones the buttons are really small so its harder to use.

Operating systrems

The operating systems is the software that supports a computer's basic functions like scheduling tasks, executing applications and controlling peripherals.

Other softwares

Other softwares are like alternatives to other applications like Skype and photoshop they all have alternatives to the app. Alternatives to Skype are Goober and ooVoo

Alan Turing

Who is Alan Turing? Alan Turing is basically the father of computers. He is the man who invented the computer. He was born on June 23, June 23 1912. He died on June 7 1954. He was from England. He has a brother called John Turing.

Tim Berners-Lee

Who is Tim Berners-Lee? Tim Berners-Lee was the man who invented WWW witch stands for World Wide Web. He was born on June 8 1955. He is still alive today. He made this then gave it away for free.

The 4 Generations of Computers

The first generation computer was Colossus. Colossus was used in the 2nd world war to crack the codes the Germans sent to each other. Today a group of people made a replica of Colossus with only a few black and white photos that were kept after the war.


The second generation computer was the Elliot 803. Elliot 803 was popular in universities and uses a tape like Colossus. The Elliot 803 was similar to Colossus cause it uses tape and takes up a lot of space.


The third generation computer was Integrated circuit. It was bought by the government department, businesses and universities. Another way to put data into the computer would be to place what you want onto the card and the computer would read it.


The fourth generation computer was the BBC Micro. It was made by a group of 5-6 people. It was bought by individual for their homes and work but they were still bought by businesses and universities.