Computing Hardware

The history...

Timothy John Berners Lee

Tim was born on the eighth of June nineteen fifty five and was raised in London, he studied physics at oxford university and to the worlds joy became a software engineer.

During nineteen eighty, whilst employed at the CERN, the European particle physics laboratory in Geneva. He fist managed to describe the concept of a global system, based on the concept of `hyper text`, that would allow researchers anywhere to share info. Tim also built a prototype called `enquire`.

Basically he invented the world wide web!!!

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Question-What made you think of the WWW?


Well, I found it frustrating that in those days, there was different information on different computers, but you had to log on to different computers to get at it. Also, sometimes you had to learn a different program on each computer. So finding out how things worked was really difficult. Often it was just easier to go and ask people when they were having coffee.

Because people at CERN came from universities all over the world, they brought with them all types of computers. Not just Unix, Mac and PC: there were all kinds of big mainframe computer and medium sized computers running all sorts of software.

I actually wrote some programs to take information from one system and convert it so it could be inserted into another system. More than once. And when you are a programmer, and you solve one problem and then you solve one that's very similar, you often think, "Isn't there a better way? Can't we just fix this problem for good?" That became "Can't we convert every information system so that it looks like part of some imaginary information system which everyone can read?" And that became the WWW.

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Computer Development

The history of computer development is often referred to in reference to the different generations of computing devices. Each generation of computer is characterized by a major technological development that fundamentally changed the way computers operate, resulting in increasingly smaller, cheaper, more powerful and more efficient and reliable devices. Read about each generation and the developments that led to the current devices that we use today.

Input/Output

Input / Output device

An output device is any piece of computer hardware equipment used to communicate the resultsof data processing carried out by an information processing system (such as a computer) to theoutside world.In computing, input/output, or I/O, refers to the communication between an informationprocessing system (such as a computer), and the outside world. Inputs are the signals or datasent to the system, and outputs are the signals or data sent by the system to the outside.The most common input devices used by the computer are the keyboard and mouse. Thekeyboard allows the entry of textual information while the mouse allows the selection of a point onthe screen by moving a screen cursor to the point and pressing a mouse button. The mostcommon outputs are monitors and speakers.

Hard drives

A hard disk drive (sometimes abbreviated as Hard drive, HD, or HDD) is a data storage device. The hard disk was first introduced on September 13, 1956 and consists of one or more platters inside of an air-sealed casing. Internal hard disks reside in a drive bay and connect to the motherboard using an ATA, SCSI, or SATA cable, and are powered by a connection to the PSU (power supply unit). Below is a picture of what the inside of a hard drive looks like for a desktop and laptop hard drive.
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What Are They?

A computer uses two types of storage. A main store consisting of ROM and RAM, and backing stores which can be internal, eg hard disk, or external, eg a CD or USB flash drive.

ROM and RAM

Main store (or computer memory) is divided into Read Only Memory (ROM) and Random Access Memory (RAM).

ROM

ROM is memory that cannot be changed by a program or user. ROM retains its memory even after the computer is turned off. For example, ROM stores the instructions for the computer to start up when it is turned on again.

RAM

RAM is a fast temporary type of memory in which programs, applications and data are stored. Here are some examples of what's stored in RAM:

  • the operating system
  • applications
  • the graphical user interface (GUI)

If a computer loses power, all data stored in its RAM is lost.

Motherboards

What is a Motherboard?

The motherboard serves to connect all of the parts of a computer together. The CPU, memory, hard drives, optical drives, video card, sound card and other ports and expansion cards all connect to the motherboard directly or via cables.

The motherboard is the piece of computer hardware that can be thought of as the "back bone" of the PC.

The Motherboard is Also Known As

mainboard, mobo (abbreviation), MB (abbreviation), system board, logic board.

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Touch screens

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Touch Screens

Different kinds of touchscreen work in different ways. Some can sense only one finger at a time and get extremely confused if you try to press in two places at once. Others can easily detect and distinguish more than one key press at once. These are some of the main technologies:

Resistive,

Capacitive,

Infrared,

Surface Acoustic Wave,

Near field imaging,

Light pens.

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EVALUATION

*A nice layout

*relevant background

*good information.

*relevant pictures

-TRY NOT TO COPY AND PASTE.

-Try and fix the second button

over all a good flyer with good information .

8/10

QUESTION: WHAT IS THE TIMELINE SECTION ON THE GENNERATIONS OF COMMPUTERS FOR? THERE IS NO INFORMATION TO TELL WHAT IT IS.