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8/14/2019 Topic 1-Evolution Comp
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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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