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Computers They come in all Shapes and Sizes This is a computer, right? When you think of a computer, what do you think of? A desktop Computer? Or something else? The Early Days ENIAC, EDVAC, UNIVAC, etc... These early valve based computers were the forerunners to the modern computer.

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Computers l.jpg

Computers

They come in all Shapes and Sizes


This is a computer right l.jpg
This is a computer, right?

When you think of a computer, what do you think of?

A desktop Computer?

Or something else?


The early days l.jpg
The Early Days

  • ENIAC, EDVAC, UNIVAC, etc...

  • These early valve based computers were the forerunners to the modern computer.

  • They were big but not very powerful.


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SuperComputers

World’s most powerful computers.

Typically used for number crunching including ...

scientific simulations,

animated graphics

analysis of geological data

structural analysis

computational fluid dynamics

physics

chemistry

electronic design

nuclear energy research

meteorology


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Mainframe Computers

  • Process large volumes of data at high speed.

  • They usually manage of enterprise-wide corporate information systems.

  • They act as “super servers” or do high volume data processing tasks in big insurance companies, banks, etc.

  • They sell in relatively small volumes.


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MiniComputers

  • Mostly built between 1963 and 1987

  • Smaller and less powerful than a mainframe, typically about the size and shape of a wardrobe, mounted in a single tall rack.

  • Were often used in applications such as industrial control, permanently assigned to one application.

  • These days they have been largely replaced by PCs.


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Microcomputers

  • Otherwise known as Personal Computers, or PCs.

  • Processing power of PCs has increased dramatically in the past 10 years.

  • Support for peripherals like printers, scanners, etc...

  • Can act as desktop (standalone) or workstations (networked)


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Laptops and Notebooks

  • Lightweight and Portable.

  • Fullsize keyboards.

  • Large LCD Screens.

  • Laptops can be as powerful as desktop computers.

  • Supports peripherals.


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Palmtops and Handhelds

  • Smaller than a laptop.

  • Usually less powerful.

  • Smaller keyboard.

  • Reduced screensize.

  • Cut-down Operating System such as Windows CE.


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Personal Digital Assistants

  • Pocket Size.

  • Touch screens or handwriting recognition for input.

  • Designed as a support tool for a PC, rather than a complete computer themselves.

  • Used mainly as a personal organiser.


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Weird and Wonderful Computers

  • Stanford University’s Matchbox Webserver

    • RedHat Linux 5.2

    • AMD486-SX CPU

    • 16Mb RAM

    • 16MB ROM

    • Weighs 20 grams

  • Amazing Ally

    • 32 Mbits RAM

    • Uses plugin “books” for programs

    • Sensors and buttons

    • Internal clock

    • Animatronics


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And all over the place...

  • Microwave ovens, Appliances, Amusement machines, Phones, Cars, etc...

  • Most electronic devices have some form of computer-control in them.

  • Becoming more and more connected.

  • Most of us don’t realise just how often we come in contact with computers!


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