The document summarizes different types of computers based on the data they handle and their size. It discusses analog computers, digital computers, and hybrid computers in terms of the type of data they measure - continuous or discrete. It then describes various sizes of digital computers from supercomputers, mainframes, mini computers to microcomputers like desktops, laptops, palmtops, wearables and pocket computers giving examples of each.
3. Analog Computers
The computers that measure continuous data like
physical quantities such as pressure, speed, time or
temperature and convert them to numeric values
also called analogue computer
Designed to perform a particular or a single task
Low accuracy and limited storage capacity but very
high speed
widely used in industrial, medical and scientific
purposes
Some examples of analog or analogue computers are:
8. Digital Computers
The computers which is both electronic and digital
computer
Measures discrete or discontinuous data and uses binary
digits 0 and 1.
Most popular computer.
Highly accurate, fast and reliable
Use processor as a memory chip
Information is given to the computer in the form of electric
signals
Used to perform arithmetic and logical calculations
Some examples of digital electronic computers are:
11. There are generally two types of digital
computer, they are:
General purpose digital
computer
I. Designed to perform many
tasks.
II. Complex and expensive.
III. Used in engineering,
science, commerce and
industry.
Special purpose digital
computer
I. Designed to perform specific
task.
II. Simpler and cheaper.
III. Used in automobiles to
control fuel and breaking
system accounting software
used, accounting software
used by business firms,
banks, etc.
12. Hybrid Computers
The computer which is the combination of both digital
and analog computer
Mostly used for scientific research and engineering
purposes
Has the speed of analog computers and the accuracy of
digital computers
Special purpose machines.
Have convertors which can covert analog signal into
digital signal and vice versa.
Some examples of hybrid computers are:
17. Super Computers
Largest and powerful computer
Capable of processing large amount of data at a tremendous
speed.
Expensive and used only for specialized purpose.
Kept in protective room with special cooling systems, power
protection and other security features.
Speed of super computer is measured in FLOPS (Floating point
Operations Per Second)
Used for weather forecasting, weapon research, designing
vehicles, aircrafts, oil exploration, nuclear research etc.
For Example:: CRAY, PLEIADES, PARAM PADMA, IBM ROAD
RUNNER, TIANHE-IA, NEC EARTH SIMULATOR, CRAY
JAGUAR, IBM BLUE GENE, STRATUS etc…..
23. Contd…..Super Computer
Deep Blue was a chess-playing
computer developed by IBM. On May 11,
1997, this machine won the six-game match
against world champion Garry Kasparov by
two wins to one with three draws. Kasparov
accused IBM of cheating and demanded a
rematch. IBM refused and retired Deep Blue.
Kasparov had beaten a previous version of
Deep Blue in 1996.
24. Mainframe Computer
Also known as BIG IRON
Second largest, powerful, expensive and ultra fast
computers
High speed data processing with massive storage capacity
Supports upto 100 or 1000 users at a time
Kept inside glass offices with special air conditioning , full
power backup and other security features.
Used in large organization, financial data processing,
universities, military purpose etc
For EXAMPLES::
28. Mini Computer
Mid range computer with slower speed, less memory
capacity, limited hardware compared to mainframe
computers
Supports up to 50 users at a time
Used in large organization, universities, research
institute etc
Used to look out production process and stocks in
industries, payroll preparation, accounting and
scientific computation
For EXAMPLES::
32. Micro Computer
Small digital computer with MICROPROCESSOR in
CPU
Cheap, compact, portable with excellent graphic
capabilities
Consist of RAM, suitable storage device and various
input/output devices
Designed to be used by a single person only
Used in schools, home, offices, banks, hospitals etc…
Also known as “PERSONAL COMPUTER”
For EXAMPLES::
35. Types of Micro Computers
Desktop Computers
Designed to be used on the desk or table
Separate system unit (CPU), screen, keyboard, mouse,
speakers etc
Not so portable
Consists of 2 types of models
DESKTOP model is broad and low
TOWER model is narrow and tall
38. Types of Micro Computers
Laptop Computer
Designed to be used on the lap
System unit (CPU), screen, keyboard, touchpad,
speakers etc are integrated (combined)
Small, portable designed for mobile use
Comes with a rechargeable battery
Can be used at the time of no electricity for few hours if
charged sufficiently
40. Types of Micro Computers
Palmtop Computer
Small, light weight, programmable computer designed
to be used on the palm of hand
Use stylus or Metal pen and touch sensitive screen
Also known as Handheld PC
EXAMPLES::NEC MOBILE PRO 900C, HP 320LX, HP
JORNADA 720, VADEM CLIO
43. Types of Micro Computers
Wearable Computer
Computer that can be worn on the body
Consist of voice recognition, head mounted display,
wireless communication, touchpad etc
Used in health monitoring system, information
technology, military trainings etc.
EXAMPLES::POMA, TIMEX DATALINK etc…
47. Types of Micro Computers
Pocket Computer
Small, portable handheld, calculator sized computer
running on batteries
Data transfer can be done by connecting it to desktop or
laptop or through Bluetooth as well
EXAMPLES::PB-2000, PB-80, PB-100, PB-500F etc…