Computers are classified in three types:-
1.Based on operational principle
2.Based on capacity, speed and reliability
3.Based on size
1: Based on Operational Principles
Analog - Analog computers solve problems by using continuously changing data such as: 1.temperature
2.pressure
3.voltage
Digital - The digital Computers work upon discontinuous or discrete data. They convert the data into digital signal (binary digits 0 and 1) and all operations are carried out on these digits at extremely fast rates.
2. Based on capacity, speed and reliability
Mainframe - Mainframe computers allow many simultaneous users industry, research, and university computing centers typically huge databases, complex mathematical operations, processing millions of transactions everyday.
Minicomputers - Minicomputers mid-range servers supporting smaller number of simultaneous users, typically 50 to 100 larger businesses accounting, billing, and inventory records.
Microcomputers - Microcomputers are personal or desktop computer designed for general use by a single person home and all types of businesses entertainment, communication, personal databases, and spreadsheets, word processing, accounting, inventory control, research.
3. Based On Size:
Desktop - A Personal Computer that is not designed for portability. The computer is set up in a permanent location. Most desktops offer more power, storage and versatility for less cost.
Laptop - These are also called notebooks. Laptops are 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.
Palmtop - More commonly known as Personal Digital Assistants (PDAs). Palmtops are tightly integrated computers that often use flash memory instead of a hard drive for storage. These computers usually do not have keyboards but rely on touch screen 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 the palmtop is the handheld computer.
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.
Server - A computer that has been optimized to provide services to other computers over a network. Servers usually have powerful processors, lots of memory and large hard drives.
Supercomputer- This type of computer usually costs hundreds of thousands or even millions of dollars. Although some supercomputers are single computer systems, most are comprised of multiple high performance computers working in parallel as a single system. The best known supercomputers are built by Cray Supercomputers.
Wearable- The latest trend in computing is wearable computers. Common computer applications (e-mail, database, multimedia, calendar/scheduler) are integrated into watches, cell phones, even clothing.
1.Based on operational principle
2.Based on capacity, speed and reliability
3.Based on size
1: Based on Operational Principles
Analog - Analog computers solve problems by using continuously changing data such as: 1.temperature
2.pressure
3.voltage
Digital - The digital Computers work upon discontinuous or discrete data. They convert the data into digital signal (binary digits 0 and 1) and all operations are carried out on these digits at extremely fast rates.
2. Based on capacity, speed and reliability
Mainframe - Mainframe computers allow many simultaneous users industry, research, and university computing centers typically huge databases, complex mathematical operations, processing millions of transactions everyday.
Minicomputers - Minicomputers mid-range servers supporting smaller number of simultaneous users, typically 50 to 100 larger businesses accounting, billing, and inventory records.
Microcomputers - Microcomputers are personal or desktop computer designed for general use by a single person home and all types of businesses entertainment, communication, personal databases, and spreadsheets, word processing, accounting, inventory control, research.
3. Based On Size:
Desktop - A Personal Computer that is not designed for portability. The computer is set up in a permanent location. Most desktops offer more power, storage and versatility for less cost.
Laptop - These are also called notebooks. Laptops are 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.
Palmtop - More commonly known as Personal Digital Assistants (PDAs). Palmtops are tightly integrated computers that often use flash memory instead of a hard drive for storage. These computers usually do not have keyboards but rely on touch screen 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 the palmtop is the handheld computer.
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.
Server - A computer that has been optimized to provide services to other computers over a network. Servers usually have powerful processors, lots of memory and large hard drives.
Supercomputer- This type of computer usually costs hundreds of thousands or even millions of dollars. Although some supercomputers are single computer systems, most are comprised of multiple high performance computers working in parallel as a single system. The best known supercomputers are built by Cray Supercomputers.
Wearable- The latest trend in computing is wearable computers. Common computer applications (e-mail, database, multimedia, calendar/scheduler) are integrated into watches, cell phones, even clothing.
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