Computer can be classified on the basis of size:

1. Micro-Computer 

2. Mini- Computer 

3. Mainframe- Computer 

4. Super Computer

1. Micro-Computer or PCs 

A microcomputer is a computer whose CPU is a chip. A microchip is a processor the entirety of whose part is on a solitary incorporated circuit chip. 

Computer is a sort of Mini-er scale computer. Computers are called so on the grounds that they are intended for individual utilization of individual or individual private venture units' office mechanization unit or experts. Pc can be utilized for assortment of uses like computer proficiency, silly buffoonery, business applications, programming and so on. 

Types of Micro Computer:

• Desktop Computer 

• Laptop Computer 

• Palmtop Computer, Digital Diary ,Notebook ,PDAs. 

Some run of the mill machines are–DCM Tandy, Apple-II, BBC Acorn, IBM-PC , Pentium. 

2. Mini Computer – They are littler rendition of the Mainframe- servers. By and large they offer a similar figuring power as greater partners. The most significant favorable position of a scaled down PC over the fundamental edge is that it is less expensive in cost littler in size and solid. It doesn't require cooling and can be worked in room temperature. 

Primary utilized of these frameworks is in instruction in nearby government word preparing and so forth in business they are being utilized for including stock finance and so forth. it is commonly utilized as server framework on systems with PCs as hubs. 

                         

3. Mainframe Computer – they are extremely enormous in size and offer the most extreme figuring power. An enormous number of peripherals can be connected to them. They are commonly utilized in huge systems of PCs with the Mainframe- computer being model purpose of the system. They utilized satellites for systems administration. 

A common application is the carrier framework. It has a Mainframe- computer PC at their administrative center where data of the considerable number of battles is put away. Little PCs are introduced at the booking workplaces are connected to focal information bank, so that exceptional data of all flights is constantly accessible. 

4. Super Computer – They are generally costly of the considerable number of PCs. These PCs are large universally useful PCs fit for executing in excess of 10,000 millions guidance for every second and have capacity limits of a large number of bits per chip. These PCs are utilized to take care of the multi-variate numerical issues, for example, nuclear atomic and plasma material science seismology, optimal design and so on. 

  Super PC are commonly equipped for taking care of countless coasting point. Activities every second (MFLOPS). The speed of super PCs for the most part estimated in "Failures" (Floating Point Operations Per Second). 

  Super PCs are utilized for profoundly figuring serious errands, for example, climate determining, atmosphere inquire about, sub-atomic demonstrating, physical recreation, and cryptanalysis and like military and Scientific offices are overwhelming clients. 

   Some super PCs are – Cray 1, Cray 2, Cray 3 perform 10 billions activity for each second, Param, Cyber 810&830 and so forth.

                        

                                        Super Computer
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Data/Information/Input/Output/Input & Output Devices:  

Computer Generations:

Types of Computer based on working Principle:

Computer Definition,Full Form,Types of computer: