Computer can be divided into three broad groups are:

Digital computer


digital computer works upon discontinuous data.They convert the data into i.e. binary digits 0 or 1. Even letters and words are also coded as binary values. It can process number and non-number data. This type of computer can perform only addition. Application areas of digital computer are industrial process control, business and scientific data processing. Digital computer are much faster than analog computer and more accurate.

Analog computer


Analog computer are used to process continuous data. The solve problem by translating physical conditions such as flow pressure , temperature, angular position or voltage into mechanical or electrical related circuits as an analog for physical phenomenon. They are used mainly for scientific and engineering purpose.

Hybrid computer


Hybrid means combination there fore these are those computer. Which are the combination of both digital and analog computer.