There are three main types of computers based on their principles of operation: analog computers, digital computers, and hybrid computers. Digital computers are now the most common and can process data faster and more accurately than analog computers. Computers can also be classified based on their size and use - including desktops, laptops, tablets, smartphones, workstations, mini computers, supercomputers, and mainframes. Most individual users have desktops, laptops, or tablets while larger organizations rely more on server farms, mini computers, mainframes, and supercomputers.

1. TYPES OF
COMPUTERS
BY
ZAFARULLAH KOLACHI
LACTURE OF COMPUTER SCIENCE & INFORMATION
TECHNOLOGY

2. COMPUTER
AN ELECTRONIC MACHINE WHICH HELPS IN
SOLVING PROBLEMS QUICKLY AND EASILY. IT
SOLVES PROBLEMS ACCORDING TO
INSTRUCTIONS GIVEN TO IT BY THE
COMPUTER USER CALLED PROGRAMS OR
SOFTWARE. IT IS A DIGITAL MACHINE(THAT
USES BINARY DIGITS) USED IN ALL FIELDS.

3. TYPES OF COMPUTERS BASED ON
PRINCIPLES OF OPERATION
• THERE ARE THREE DIFFERENT TYPES OF COMPUTERS ACCORDING TO THE
PRINCIPLES OF OPERATION. THOSE THREE TYPES OF COMPUTERS ARE:
• ANALOG COMPUTERS
• DIGITAL COMPUTERS
• HYBRID COMPUTERS

4. ANALOG COMPUTERS
ANALOG COMPUTER IS A COMPUTING DEVICE THAT WORKS ON CONTINUOUS RANGE OF VALUES.
THE RESULTS GIVEN BY THE ANALOG COMPUTERS WILL ONLY BE APPROXIMATE SINCE THEY
DEAL WITH QUANTITIES THAT VARY CONTINUOUSLY. IT GENERALLY DEALS WITH PHYSICAL
VARIABLES SUCH AS VOLTAGE, PRESSURE TEMPERATURE, SPEED, ETC

5. DIGITAL COMPUTER
ON THE OTHER HAND A DIGITAL COMPUTER OPERATES ON DIGITAL DATA SUCH AS
NUMBERS. IT USES BINARY NUMBER SYSTEM IN WHICH THERE ARE ONLY TWO DIGITS 0
AND 1. EACH ONE IS CALLED A BIT. THE DIGITAL COMPUTER IS DESIGNED USING
DIGITAL CIRCUITS IN WHICH THERE ARE TWO LEVELS FOR AN INPUT OR OUTPUT SIGNAL.
THESE TWO LEVELS ARE KNOWN AS LOGIC 0 AND LOGIC 1. DIGITAL COMPUTERS CAN
GIVE MORE ACCURATE AND FASTER RESULTS. DIGITAL COMPUTER IS WELL SUITED FOR
SOLVING COMPLEX PROBLEMS IN ENGINEERING AND TECHNOLOGY. HENCE DIGITAL
COMPUTERS HAVE AN INCREASING USE IN THE FIELD OF DESIGN, RESEARCH AND DATA
PROCESSING.

6. HYBRID COMPUTER
• A HYBRID COMPUTER COMBINES THE DESIRABLE FEATURES OF ANALOGAND
DIGITAL COMPUTERS. IT IS MOSTLY USED FOR AUTOMATICOPERATIONS OF
COMPLICATED PHYSICAL PROCESSES AND MACHINES. NOW-ADAYSANALOG-TO-
DIGITAL AND DIGITAL-TO-ANALOG CONVERTERS ARE USED FORTRANSFORMING
THE DATA INTO SUITABLE FORM FOR EITHER TYPE OFCOMPUTATION.

7. TYPES OF
COMPUTERS
•COMPUTERS FOR INDIVIDUAL
USE
•COMPUTERS FOR
ORGANIZATIONS

8. COMPUTERS FOR INDIVIDUAL USE
• DESKTOP COMPUTERS
• LAPTOP COMPUTERS
• TABLET COMPUTERS
• HANDHELD COMPUTERS
• WORK STATION
• SMART PHONES

9. Desktop computers
THE MOST COMMON TYPE OF COMPUTER
THAT YOU SEE IN HOMES, SCHOOLS, AND IN MOST
BUSINESSES
THEY ARE SMALL ENOUGH TO BE PLACED ON
A DESK OR TABLE BUT ARE TOO BIG TO BE CARRIED
AROUND
PERFORMS A VARIETY OF TASKS

10. Laptop Computers
A LAPTOP IS A SMALL, PORTABLE
COMPUTER NOWADAYS, LAPTOP COMPUTERS
ARE MORE FREQUENTLY CALLED NOTEBOOK
COMPUTERS, THOUGH TECHNICALLY
LAPTOPS ARE SOMEWHAT LARGER IN SIZE
THAN NOTEBOOKS, IN BOTH THICKNESS AND
WEIGHT.

11. Tablet computers
A TABLET IS A WIRELESS, PORTABLE
PERSONAL COMPUTER WITH A
TOUCHSCREEN INTERFACE.
THETABLET FORM FACTOR IS TYPICALLY
SMALLER THAN A NOTEBOOK COMPUTER,
BUT LARGER THAN A SMARTPHONE

12. Handheld computers
A HANDHELD COMPUTER IS A VERY
SMALL COMPUTERS

13. Work Station
A WORKSTATION IS SIMPLY A
DESKTOP COMPUTER THAT HAS A MORE
POWERFUL PROCESSOR, ADDITIONAL
MEMORY

14. SMART PHONES
A MOBILE PHONE THAT PERFORMS MANY OF THE
FUNCTIONS OF A COMPUTER, TYPICALLY HAVING A
TOUCHSCREEN INTERFACE, INTERNET ACCESS, AND
AN OPERATING SYSTEM CAPABLE OF RUNNING
DOWNLOADED APPS.

15. Computers For Organizations
•MINI COMPUTER
•SUPER COMPUTERS
•MAINFRAME COMPUTERS
•NETWORK SERVERS

16. Mini computer
MINI COMPUTERS CALLED MIDRANGE
COMPUTERS USED IN SMALLER
ORGANIZATIONS FOR SPECIFIC
PURPOSES

17. Super computers
SUPERCOMPUTERS ARE SINGLE
COMPUTER SYSTEMS, MOST ARE
COMPRISED OF MULTIPLE HIGH
PERFORMANCE COMPUTERS WORKING
IN PARALLEL AS A SINGLE SYSTEM.

18. MAINFRAME COMPUTERS
USED IN LARGE ORGANIZATIONS USERS
ACCESS THROUGH A TERMINAL MULTI
TASKING CAPABILITY AND HIGH DATA
STORAGE

19. NETWORK SERVERS
CENTRALIZED COMPUTER ALL OTHER
COMPUTERS CONNECT PROVIDES ACCESS
TO NETWORK RESOURCES MULTIPLE
SERVERS ARE CALLED SERVER FARMS OFTEN
SIMPLY A POWERFUL DESKTOP

20. THE END