1. COMPUTER Computer stands for common oriental machine particularly used in technology education research. computer invented by Charles Babbage. It is an electronic machine device which can bring use for store the data by doing some mathematic and logical operation and desired output. computer show the acquired result, high speed and more delignce.There are three device used in computer one is input device, storage device and output device.some of the basic natural language that we use english,hindi,oria etc These are the languages used to communicate among varies categories of persons.But how we shall communicate with our computer.our computer doen’t understand any of these natural language.our computer only knows binary language that is ( 0 1). Computer stands for common oriental machine particularly used in technology education research. computer invented by Charles Babbage. It is an electronic machine device which can bring use for store the data by doing some mathematic and logical operation and desired output. computer show the acquired result, high speed and more delignce.There are three device used in computer one is input device, storage device and output device.some of the basic natural language that we use english,hindi,oria etc These are the languages used to communicate among varies categories of persons.But how we shall communicate with our computer.our computer doen’t understand any of these natural language.our computer only knows binary language that is ( 0 1).

2. Characteristics of computer i) Speed ii) Reliability iii) Storage capacity iv) Increase Productivity v) Accuracy vi) Versatility vii) Communication viii) Diligence

3. CLASSIFICATION OF COMPUTER Analog computer Analog computer Digital computer Digital computer Hybrid computer Hybrid computer

4. TYPES OF COMPUTER DESKTOP COMPUTER:- Desktop computer is a home computer.It is used in the school,institude,rallway reservation,airline,company etc. DESKTOP COMPUTER:- Desktop computer is a home computer.It is used in the school,institude,rallway reservation,airline,company etc.

5. LAPTOP COMPUTER A laptop is a personal computer designed for mobile use and small and light enough to sit on a person's lap while in use.[1] A laptop integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad, and/or a pointing stick), speakers, and often including a battery, into a single small and light unit. The rechargeable battery (if present) is charged from an AC adapter and typically stores enough energy to run the laptop for three to five hours in its initial state, depending on the configuration and power management of the computer A laptop is a personal computer designed for mobile use and small and light enough to sit on a person's lap while in use.[1] A laptop integrates most of the typical components of a desktop computer, including a display, a keyboard, a pointing device (a touchpad, also known as a trackpad, and/or a pointing stick), speakers, and often including a battery, into a single small and light unit. The rechargeable battery (if present) is charged from an AC adapter and typically stores enough energy to run the laptop for three to five hours in its initial state, depending on the configuration and power management of the computerpersonal computermobile uselap[1] typical componentsdisplay keyboard touchpadpointing stickrechargeable batteryAC adapterpersonal computermobile uselap[1] typical componentsdisplay keyboard touchpadpointing stickrechargeable batteryAC adapter

6. MICRO COMPUTER MICROCOMPUTER:- Microcomputer is at lowest end of the computer range in terms of speed and store capacity. Its cup is a microprocessor. The first microcomputers were built of 8 bit microprocessor chip. Example of microcomputers are IBMPC,PC-AT. MICROCOMPUTER:- Microcomputer is at lowest end of the computer range in terms of speed and store capacity. Its cup is a microprocessor. The first microcomputers were built of 8 bit microprocessor chip. Example of microcomputers are IBMPC,PC-AT.

7. MINICOMPUTER MINICOMPUTER:-Mini computer is designed to support more than one user at a time.It process large storage capacityand operates at a higher speed. The mini computer is used in multi-user system in which varies users can work at the same time. This type of computers is generally used for processing large volume of data in an organization.There are also used as serves in local area networks(LAN).Example of minicomputer is-PGP-11. MINICOMPUTER:-Mini computer is designed to support more than one user at a time.It process large storage capacityand operates at a higher speed. The mini computer is used in multi-user system in which varies users can work at the same time. This type of computers is generally used for processing large volume of data in an organization.There are also used as serves in local area networks(LAN).Example of minicomputer is-PGP-11.

8. NOOTBOOK COMPUTER A notebook computer that weighs in a range from five to seven pounds. The term originated when laptops were routinely more than 10 pounds, and those that became lighter were placed in a special "notebook" category. In practice, notebook computer and laptop computer are synonymous. Portable computers that weigh less than four pounds may be called a "subnotebook" or "mini laptop A notebook computer that weighs in a range from five to seven pounds. The term originated when laptops were routinely more than 10 pounds, and those that became lighter were placed in a special "notebook" category. In practice, notebook computer and laptop computer are synonymous. Portable computers that weigh less than four pounds may be called a "subnotebook" or "mini laptop

9. DIGITAL DIARY Digital diaries are electronic organizers capable of storing hundreds or thousands of memo, address, and schedule records. They were produced by Casio in the early and mid 1990s, but have since been entirely superseded by Mobile Phones and PDA's. Digital diaries are electronic organizers capable of storing hundreds or thousands of memo, address, and schedule records. They were produced by Casio in the early and mid 1990s, but have since been entirely superseded by Mobile Phones and PDA's.electronic organizersCasioelectronic organizersCasio Since their debut, Casio digital diaries hosted a common set of features. Some models had extra features, while other ones, especially the earlier models, lacked some of them Since their debut, Casio digital diaries hosted a common set of features. Some models had extra features, while other ones, especially the earlier models, lacked some of them

10. PALAMTOP-COMPUTER PALAMTOP:-A Handheld PC, or H/PC for short, is a term for a computer built around a form factor which is smaller than any standard laptop computer. It is sometimes referred to as a Palmtop. The first handheld device compatible with desktop IBM personal computers of the time was the Atari Portfolio of 1989 PALAMTOP:-A Handheld PC, or H/PC for short, is a term for a computer built around a form factor which is smaller than any standard laptop computer. It is sometimes referred to as a Palmtop. The first handheld device compatible with desktop IBM personal computers of the time was the Atari Portfolio of 1989computerlaptop computerAtari Portfoliocomputerlaptop computerAtari Portfolio

11. MAINFRAME-COMPUTER MAINFRAME:-Mainframe is another form of computer system, that is generally more powerful than a typical mini computer. Mainframe themselves may very widely in cost and capacity. They are used in large organizations for large scale jobs. They are also used as controlling nodes in wide area networks WAN). Example of mainframes are DEC,ICE,ANDIBM-40.

12. SUPERCOMPUTER SUPERCOMPUTER:-At the end of the size and capability scale are the supercomputers. This systems are the largest, fastest and the most expensive computers in the world. They are used for complex scientific and defiance applications. super computers are mainly being used for whether for casting, biomedical resech,remote senging,aircraf design and other areas of science and technology. Example of super computers are- CRAYYMP,CRAY2,NECSX- 3,CRAYXMP AND PRAM from India. SUPERCOMPUTER:-At the end of the size and capability scale are the supercomputers. This systems are the largest, fastest and the most expensive computers in the world. They are used for complex scientific and defiance applications. super computers are mainly being used for whether for casting, biomedical resech,remote senging,aircraf design and other areas of science and technology. Example of super computers are- CRAYYMP,CRAY2,NECSX- 3,CRAYXMP AND PRAM from India.