A hard drive disk is a data storage used for storing and retrieving digital information using rapidly rotating disks covered in a magnetic material.An HDD retains its data even when turned off.Data is read in a diffrent manner meaning individual blocks of data can be stored in any order.
An optical drive is a disk drive that users laser lights or electromagnetic waves within or near the visible light spectrum as part of the process of reading to optical discs.Some drives can only read from discs,but recent drives are commonly both readers and recorders normally called burners or writers.
A monitor is an electronic monitor screen for computers/laptops.The monitor is normally a modern slim screen.Orignally computer monitors were used for data processing while television receivers were used for entertainment.
In computer science the general of input is to provide or to give somethink to a computer.We categorize computer devices as input devices due to the fact that we use these devices to send instructions to the computer,we are sending our input to the computer.Output is what comes out of something.An example of output is when someone talks,the word normally comesoutwhen talking about computers.When someone tells the computer to do something,what it does is the output.
A touch screen is a screen u can touch with your inger or stylus pen instead of a mouse.They are usally used in PDA but can also be used in nintendo ds or iphone.There are many touch screen objects such as ipad,tablets etc.
CPU is a central processing unit its is the most important part of almost every computer the CPU sends signals to control the other part of the computer,its similar to how a brain control's someones body.RAM is a random access memory it is the memory or storage for a computer it is used to store data for running programs on the computer.Information in the RAM can be read quickly in any order.The motherboard is the main circuit board in a complex computer system all of the different parts of the computer are connected to the motherboard.
Tim Berners-Lee is the inventor of the world wide web.The WWW is the system that delivers webpages over the internet.He created a new computer language called HTML.which most pages are written in.The first web page was available on the 6 August 1991.
Alan Turing was one of the people who worked on the first computers He was the first person to think of using a computer to do things that were too hard for a person to do. He created the Turing machine in 1936.