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Learning Outcomes:

The students should be able to:

• state the generations of computers together with the respective

processors used

• explain the generations of computers together with the respective

processors used

• identify the types of computers:

o Supercomputer 

o Mainframe

o Mini Computer 

o Micro Computer o Work Station

• define different types of computer 

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Types of Computers

•Supercomputer •Mainframes•Mini Computer •Microcomputer •Work Station

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Different Types of Computer 

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PC - The personal computer (PC)defines a computer designed for 

general use by a single person.. PCs

were first known as microcomputersbecause they were a complete

computer but built on a smaller scale

than the huge systems in use by mostbusinesses.

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Desktop - A PC that is set up in a

permanent location(not portable). Most

desktops offer more power, storage andversatility for less cost than their 

portable brethren.

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Laptop - Also called notebook. Laptopsare portable computers that

integrate the display, keyboard, a

pointing device or trackball, processor,memory and hard drive all in a battery-

operated package slightly larger than

an average hardcover book.

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Palmtop - More commonly known as Personal

Digital Assistants (PDAs),

palmtops are tightly integrated computers thatoften use flash memory instead of a hard drive

for storage. These computers usually do not

have keyboards but rely on touchscreen

technology for user input. Palmtops are

typically smaller than a paperback novel, very

lightweight with a reasonable battery life. A

slightly larger and heavier version of thepalmtop is the handheld computer .

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Workstation - A desktop computer 

that has a more powerful processor,

additional memory and enhanced

capabilities for performing a special

group of task, such as 3D Graphics or 

game development.

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Server - A computer that has beenoptimized to provide services to other 

computers over a network. Servers

usually have powerful processors, largememory and hard drives.

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Mainframe - In the early days of 

computing, mainframes were huge

computers that could fill an entire room or even a whole floor. The size of computers

has diminished while its power has

increased, the term mainframe has fallenout of use in favor of enterprise server .

You'll still hear the term used, particularly in

large companies to describe the hugemachines processing millions of 

transactions every day.

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Minicomputer - Another term rarely

used nowadays. Minicomputers fall in

between microcomputers (PCs) and

mainframes (enterprise servers).Minicomputers are normally referred to

as mid-range servers now.

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Supercomputer - This type of computer 

usually costs hundreds of thousandsor even millions of dollars. Although

some supercomputers are single

computer systems, most are comprisedof multiple high performance

computers working in parallel as a single

system. The best knownsupercomputers are built by Cray

Supercomputers.

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Wearable - The latest trend in computing

is wearable computers.

Essentially,common computer 

applications (e-mail, database,

multimedia, calendar/scheduler) are

integrated into watches, cell phones,

visors and even clothing.

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