COMPUTER LAXMAN IX-C

PowerPoint Presentation: 

COMPUTER

DEFINATION OF COMPUTER : 

DEFINATION OF COMPUTER A computer is a programmable machine. This means it can execute a programmed list of instructions and respond to new instructions that it is given. Today, however, the term is most often used to refer to the desktop and laptop computers that most people use. When referring to a desktop model, the term "computer" technically only refers to the computer itself -- not the monitor, keyboard, and mouse. Still, it is acceptable to refer to everything together as the computer. If you want to be really technical, the box that holds the computer is called the "system unit.

Characteristics of Computer…: 

Speed Accuracy Diligence Versatility Power of remembering No I.Q. No Feeling Reduction in cost Characteristics of Computer…

…Characteristics of Computer… Speed…: 

Fast device Work done at enormous speed as compare to human beings Speed of computer is measured in terms of microseconds (10 -6 ), nanoseconds(10 -9 ) and even picoseconds (10 -12 ) Shortly 3 to 4 million simple arithmetic operations per seconds 4 …Characteristics of Computer… Speed…

…Characteristics of Computer… Accuracy…: 

Works with the highest Accuracy Accuracy depends upon the “Design of Computer” Errors occurred are mostly “Human Errors” rather than “Technological Errors” Human Errors are like wrong command, inaccurate data input etc 5 …Characteristics of Computer… Accuracy…

…Characteristics of Computer… Diligence…: 

Free from “Monotony” Free from “Tiredness” Free from lack of “Concentration” Speed and Accuracy of first calculation will be the same as millionth calculation in a row 6 …Characteristics of Computer… Diligence…

…Characteristics of Computer… Versatility…: 

Can perform all kind of job simultaneously Can do diverse nature of works like calculation, graphic work, searching etc at the same time 7 …Characteristics of Computer… Versatility…

…Characteristics of Computer… Power of Remembering…: 

Unlike human being Computer can store tremendous/huge amount of data Can recall required data even stored years before in no time Doesn't differentiate “Important” & “Not Important” Loss or Deletion of data is done by User 8 …Characteristics of Computer… Power of Remembering…

…Characteristics of Computer… Reduction in cost…: 

Initial investment is high Reduce the cost of each transaction Reduce the man power and space requirements Greater efficiency 9 …Characteristics of Computer… Reduction in cost…

…Characteristics of Computer… No IQ…: 

Not a thinking machine Not Intelligent Never does a task at its own Follow human Instructions 10 …Characteristics of Computer… No IQ…

…Characteristics of Computer… No Feeling…: 

Follow human/programmer Instructions Never decides at its own will No taste No knowledge No emotion 11 …Characteristics of Computer… No Feeling…

LIMITATIONS OF COMPUTER: 

Computer has done this and that. Actually this is not the computer which has done this but the user. Despite its various features, a computer does have the following limitations: a. No Self Intelligence Today, a computer is able to do a work which is impossible for man. Computers are used to do risky and dangerous work and where sharp actually is needed. But it does not have any intelligence of its own. It works according to the instruction only. b. No Decision-Making power Computer cannot take any decision of its own. It does only those tasks which are already instructed to it. LIMITATIONS OF COMPUTER

FUNCTIONS OF COMPUTER: 

The main and also basic function of a computer is to run programs. The programs they run can help to improve humans' every day lives. But, there are four basic functions of a Computer. They are: 1. INPUT- you input data i.e. you provide data; set of instuctions . You input data through input devices which are keyboard, mouse, scanner,etc 2. PROCESSING- the computer processes it i.e. it manipulates the data which is done by the C.P.U 3. OUTPUT- After processing the data the computer displays the result , it gives an output. Output devices are the monitor, in the case of visual output. speakers, in the case of audio output, printers, etc 4. STORAGE- You can save your data for future use in the CPU itself which is stored in the computer's ROM. There are several other storage devices also like removable disks , CDs, etc FUNCTIONS OF COMPUTER

Types of computer: 

Types of computer

Analog computer: 

Analog computer measures and answer the questions by the method of “HOW MUCH”. The input data is not a number infect a physical quantity like tem, pressure, speed, velocity. Signals are continuous of (0 to 10 V) Accuracy 1% Approximately High speed Output is continuous Time is wasted in transmission time Analog computer

Analog computer: 

Analog computer

Digital Computers: 

Digital computer counts and answer the questions by the method of “HOW Many”. The input data is represented by a number. These are used for the logical and arithmetic operations. Signals are two level of (0 V or 5 V) Accuracy unlimited low speed sequential as well as parallel processing Output is continuous but obtain when computation is completed. Digital Computers

Micro Computer: 

Micro computer are the smallest computer system. There size range from calculator to desktop size. Its CPU is microprocessor. It also known as Grand child Computer. Application : - personal computer, Multi user system, offices. Micro Computer

Mini Computer: 

These are also small general purpose system. They are generally more powerful and most useful as compared to micro computer. Mini computer are also known as mid range computer or Child computer. Application :- Departmental systems, Network Servers, work group system . Mini Computer

Mini computer: 

Mini computer

Main Frame Computer: 

Mainframe computers are those computers that offer faster processing and grater storage area. The word “main frame” comes from the metal frames. It is also known as Father computer. Application – Host computer, Central data base server. Main Frame Computer

Super Computer: 

Super computer are those computer which are designed for scientific job like whether forecasting and artificial intelligence etc. They are fastest and expensive. A super computer contains a number of CPU which operate in parallel to make it faster. It also known as grand father computer. Application – whether forecasting, weapons research and development. Super Computer

Super computer: 

Super computer

Classification of Digital computer : 

Desktop Workstation Notebook Tablet PC Handheld computer Smart Phone Classification of Digital computer

workstation: 

workstation

Tablet PC: 

Tablet PC

Handheld PC(PDA): 

Handheld PC(PDA)

Smart phone: 

Smart phone

Presented by: LAXMAN SINGH IX- C: 

Presented by: LAXMAN SINGH IX- C