CLASSIFICATION of COMPUTER||TYPES OF COMPUTER||WORKING OF COMPUTER
CLASSIFICATION of COMPUTER
The computer can be classified according to their speed, storage capacity and their us as below:[1] ON THE BASIS OF PURPOSE
[1] GENERAL PURPOSE COMPUTER
A computer that fellow instructions for general requirements such as sales ANALYSIS, financial accounting, invoicing, management etc[2] SPECIAL PURPOSE COMPUTER
Computers that are designed from scratch to perform special tasks like scientific applications and research, weather forecasting, space application, medical diagnosis, etc.
[2]ON THE BASIS OF APPLICATIONS
[1 ]ANALOGUE COMPUTER
Analog computer continuously measureParticular physical properties and performs computations on these measurements. A very simple example of the analogue computer is a car speedometer
[2] DIGITAL COMPUTER
A digital computer essentially is a machine that works on discreet digits or numbers I.e, 0and1 (binary digits).per Sonal computer is the example of a digital computer.[3 ]HYBRID COMPUTER
these computers are the combination of an analog and digital computer.ECG Machine is an example of a hybrid computer.(3)ON THE BASIS OF SIZE
[1] SUPERCOMPUTER
these are amongst the fastest machines in terms of PROCESSING speed, using multiprocessing techniques, where a number of processors are used to solve a problem e.g Cray, EtA, HITACHIetc.[2] MAINFRAME COMPUTER
MAINFRAME COMPUTER is large COMPUTERs and is generally32 bit machine or on the higher side, .they have the very large disk to store servalgigs bites of data and transfer data from disc to Maine Memory at several hundred Mbps.e.g.Medha,Sperry, dec,lcl, etc.[3]MINICOMPUTER
mini computer is a mini version of the MAINFRAME computer and is smaller and cheaper.mini computer are 16bitMinicomputer has efficient storage and handling of text, in compression son to lower bit machines.
[4]Microcomputer
A microcomputer is a small general-purpose computer system that provides all functions elements found in large systems.Microcomputer-based on micro processed chips.they are 32/64bit machines.e.g.,PCs,palmtop,laptop,etc.WORKING OF A COMPUTER SYSTEM
A computer system consists of three types of hardware I.e.,
1) Input devices
2) Output device
3) peripherals(C.P.U,STORAGE ,etc.)
The user gives instructions and commands to the computer in the form of signals through input device and the signals are received byC.P.U. which has three parts:
a)A.L.U. b)C.U. c)M.U.
The arithmetical and logical unit does the processing on the data and instructions given by user.control unit controls the flow of signals within the computer. It receives the signals from input devices, given it to A.L.U to perform PROCESSING and Memory unit stores the information. primary Memory can be accessed directly by the processor whereas secondary Memory can be used through primary Memory. output devices are used to display or print the(processed information)
0 comments: