Classification of computer
- 1. CLASSIFICATION OF COMPUTER EHTASHAM UL HAQ LECTURE NO 2 GOVT. COLLAGE HAYATABAD
- 2. CLASSFICATION OF COMPUTER Types of Computers On the basis of Purpose On the basis of Technology On the basis of size & Capacity General purpose Special Purpose Analog Digital Hybrid Super computer Mainframe computer Mini computer Micro computer
- 3. On the basis of purpose General purpose computer They are used to perform a variety of tasks They are used in solving a business problem as well as mathematical equation with same accuracy and consistency . They are Generally found in home and offices. Their uses include preparation of documents ,letters ,reports, financial analysis ,data recording and analysis etc.
- 4. Special Purpose computers Special purpose computers are designed to perform only specialized task for which they are meant. Example weather forecasting, space research ,air traffic control ,medical diagnostic etc.
- 5. ANALOG COMPUTER Analog computer were commonly used for scientific & engineering problems, particularly in chemical industry, electric power plants, and petroleum refineries. These type of computers are rarely use in current world. For Example: Electric current meter, Fuel pump station meters etc.
- 6. Digital Computer They represent data, whether numbers, letters ,or symbol, in binary form and they work with numbers in the form of separate discrete digits . They can be used in different applications ( like commercial , administrative and Mathematical ) since they can store different set of instructions and program . There are Three major elements in a digital computer which help in solving the problems they are. Hardware Software Data Example Desktop PC , not books, work stations ,smart phones etc
- 7. Hybrid Computer The combination of features of analog and digital computer is called Hybrid computer. These computers use analog to digital and digital to analog converters to convert the analog signals into discrete numbers and digital numbers to analog signals Used in various areas of engineering, space vehicle simulation, passenger flight radar system, also used to control robots. Example in hospital intensive care unite (ICU),a machine is used to monitor the blood pressure and temperature of the patient . Digital thermometer and ECG machine are example of hybrid computer
- 8. On the basis of size and capacity Super Computers They are very powerful and expensive and huge size computer They are used in complex scientific applications like geological data . genetic engineering They are the fastest calculating device ever invented and are not used for commercial data processing They have huge primary memory and the most advanced capabilities They support multiprocessing and parallel processing and allow thousand of users to use it at the same time Their operating system is also very complex.
- 9. Mainframe Computers They are not as powerful as super computers but are extremely expensive. They are multi-programing , multi-user and high performance computer. They operate at a very high speed They have very large storage capacity and can handle the workload of many users. The processing speed of mainframe computers is measured in MIPS(Million Instructions Per second) i-e 200-1200 MIPS They are used in organizations where many people require frequent access to same data like banks , insurances company , airlines etc
- 10. Mini computers Mini Computers are much smaller in size than mainframe computers. They are suitable for small business requirement of a server or host which supports hundreds of users at a time . In business they are used for invoicing stock control payroll sales analysis production planning etc Their speed of operations and memory space is lesser the mainframe computer Example mini computers IBM 8000 seriesm
- 11. Micro Computers Micro computers are small , low cost and single user digital computer. Microcomputers are stand alone computers but they can be connected together using internet and wires to create a network of computers that can serve more than one user . Desktop computers notebooks , laptops tablets smart phones