Computer Sizes

parisfawnΤεχνίτη Νοημοσύνη και Ρομποτική

17 Νοε 2013 (πριν από 3 χρόνια και 11 μήνες)

93 εμφανίσεις

Speed/Storage

Computer Trends

Sizes of Computers

Computer Technology

Changes in Computers over the
Past 50 years


Computers are SMALLER


From room size to pocket size


Computers are FASTER


Billions of cycles per second


Computers are LESS EXPENSIVE


Price goes down as technology becomes
more available

Trends for the Future


Computers will continue to get
smaller

and
faster.


Even more people will have access to
computers.


Voice recognition will get better and be used
more widely.


Security for computers will be an increasing
problem.


The internet will grow even larger.


What trends do you see for the
future?


Artificial Intelligence?


Computer Implants in Pets or Children?


Virtual Vacations?


Speech recognition?


Virtual keyboard?
(laser projection)


??????

Speed


Measured in Hertz


Megahertz (MHz) millions of cycles per
second


Gigahertz (GHz) billions of cycles per second

Size

Measuring Storage and Memory


Bit


Bytes


Kilobyte*

One Thousand Bytes


Megabyte*

One Million Bytes


Gigabyte*

One Billion Bytes


Terabyte*

One Trillion Bytes


*approximately

Internal Storage / Memory


RAM


Random Access Memory


Temporary Storage for Current Application


Data is lost if not saved


ROM


Read Only Memory


Cannot be altered or erased by user

Computers for Home and Personal
Use


Affordable, small units that can be used at
home OR at work.

Palm


Also called:


Handheld


PDA


Cost: $100
-

$500


Laptop or Notebook


Also called a PC


Portable


Cost $600
-

$3,000

Desktop


Also called PC


Cost: $500
-

$1,500

Computers for Business




Used in addition to or in conjunction with
PCs, laptops, palms, etc.

Mini Computer


Sometimes used as a
server for a small


medium sized
network.


Dumb terminals are
frequently attached it.


Cost: $10,000 and up


Mainframe


Used as a server for
medium to large
businesses or
organizations such as
banks that
handle

millions of
transactions a day.


Cost: $100,000 and
up

Super Computer


Largest, most
powerful computers
used today.


Weather forecasting


Air Traffic Control


NASA


Government


Cost: $ Millions