The computer is an electronic device which accepts the input and processes them to give desired output. There are various types of computer available in the market. We can classify the computer as special purpose computers and general purpose computers. Special purpose computers are applicable on particular application area and have limited area for application like temperature recording, speed measurement, telephone billing etc, but general purpose computers are the standard computers used for general application like word processing, spreadsheet, database application, internet access, program development etc.
The computer that work with natural phenomena and physical values like earthquake measurement, speed of the wind, weight light etc is known as Analog computers. It is especially used in scientific work, medical and industrial field. These are special purpose computers. It measures physical values such as temperature or pressure that fall along a continuous scale in temperature or pressure. For example, you can see a system on petrol pump that contains an analog processor and analog device that converts flow of petrol into quantity. Speedometer in cars and your watch are other examples of analog computer.
Features of Analog computer
A computer that work with digital value 0 and 1. Where 0 is OFF and 1 is ON. It works with discrete data. Digital computer does not measure the continuous data for continuous output. Most of the electronic system is based on the digital system. Digital computers are very popular for actual computers are very popular for actual computer works like preparation of the report, documentation, billing and other graphical work etc. The entire PC (Personal Computer) used today on different fields are digital computers.
Features of Digital computer
It is the combination of analog and digital computer system. It works with continuous and discrete value. The good qualities of analog and digital computers are combined on this computer and made the hybrid computer. These are used in ICU (Intensive Care Unit) of the hospital, jet planes, and other data analysis terminals. Hybrid computer transfers the data from analog to digital and digital to analog and vice-versa.
Features of hybrid computer
There are different basis of the classification of computer. The modern basis of computer classification are:
i. General purpose computer
ii. Special purpose computer
The broad classifications of computer on the basis of work (function/activity) are:
|Analog computer||Digital computer|
|1.They process continuous data.||1. They process discontinuous data|
|2.They are special purpose computers||2. They are general purpose computers.|
|3.They are expensive than digital |
|3. They are cheaper than analog computers.|
|4. They produce Analog signals. Eg. |
|4. They produce digital signals. Eg. |
Personal computer, Laptops etc.