Speaker is a soft copy out device that plays or produced sound generated by computer. A speaker can produce sound when it is connected with sound .....

Plotter or graphic plotter is a printer like hard copy output device which is used to print large size graphs, engineering drawings, posters .....

Modulator and Demodulator is a communication device which converts analog signal to digital & vice versa. It is mainly connected over a telephone .....

Sound card is a device that generates sound and provides audio output to external device such as .....

Impact printer Non-Impact printer i. It produces sound while printing. i. It does not produce sound while printing. ii. It is cheaper. ii. It is expensive. iii. It prints slowly. iii. It prints fastly. iv. E.g. Dot matrix Iv . E.g. Laser .....

Printer is hard copy permanent output device. Its types are: Impact printer Non-Impact .....

CRT monitor LCD monitor i. It is made by glass and heavier. i. It is made by liquid crystal material and lighter. ii. It is cheaper and not portable. ii. It is expensive and portable. iii. It produces low quality. iii. It produces high quality .....

Soft copy output devices produce the result on screen for temporary purpose where as hard copy output devices produce the result on printed form permanent purpose. .....

The devices which are used to produce or display result of processed data is known as output devices. Their types are. i. Soft copy output device - monitor. ii. Hard copy output device - printer. .....

Different types of computer hardware are: Input hardware (device) Output hardware (device) Memory hardware System hardware Storage .....

All the physical parts or tangible components of computer which can be touched and felt is known as computer hardware E.g. keyboard, monitor, RAM, hard disk .....

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Bar Code Reader is also an input device which reads vertical band of lines known as bar codes (standard codes) and converts them to electrical pulses which are sent to the computer for processing. It helps to identify product quality, model & .....

Magnetic Ink Character Reader is an input device that reads character printed on paper magnetically. It is mainly used for identifying account holder's signatures in computerized .....

Optical Character reader is an input device which is used to detect (Read) alphanumeric characters printed on any paper. It is mainly used in computerized bank to identify bank cheques paper notes .....

Scanner is also a common input device which allows scanning anything such as text, graphic, Image, photos etc. & can be transferred to the computer as .....

Digital camera is one of the popular & common input devices which is used to take photograph & stores it in digital format in the memory of computer. The stored photo can be transferred into computer as input which can be modified as .....

Light pen is an input device with special sensitive ink which is used write directly on the screen so it can be converted as input to the computer. It is mainly used by computer aided .....

Mouse is a pointing input device which is used to point & move cursor around the screen & select GUI .....

The different types of keyboard are: XT (extended Technology ) keyboard Advance keyboard (AT) Enhance keyboard Multimedia keyboard Wireless .....

Keyboard is a primary input device which is used for entering data to the computer for processing. The main function of keyboard is to generate the related binary code and send to the .....

The main functions of input unit are: To accept data and instructions from the user. To converted the accepted data into binary format. To transfer the converted binary format data to the processor for further .....

An input device is the medium through which data and instruction are entered into the computer. They are:Keyboard Mouse .....

computer is known as automatic machine because computer is diligence .....

The measuring unit of computer is as Unit Fractions of second Milliseconds(ms) One thousandth (1/1000) Micro seconds(Ms) One millionth (1/1000000) Pico seconds One billionth (1/1000000000) Nano seconds .....

Bug is an error or mistake due to the fault in computer hardware and program. Debug is the process of removing bugs (errors) in the computer program. .....

Advantages of computer are: Computer is faster to perform any task than any other devices ever invented. Computer is accurate and reliable than human being. Disadvantages of Computer are: Initially computer is expensive so each and every .....

The limitations of computer are: Computer cannot change the processing steps itself. Computer cannot think since it does not have its own brain. .....

The capabilities of computer are: i. Computer is a device capable of storing huge amount of data in small device. ii. Computer is device capable of calculating very fast and .....

Computer is called versatile machine because it is used in almost all the fields for various .....

Computer is called diligent machine because it can perform the task repeatedly without loosing its speed and accuracy for a long time. .....

Computer always produce accurate result but sometimes the wrong result produced by the computer is the outcome of wrong instructions programs given by the user level which is termed as Garbage-In Garbage-Out .....

The circuitries of computer are designed on the basis of electrical signals and data travel them as the speed of current, therefore the computer is able to perform any task at the high .....

There common ability that every computer has are:To accept data and instructions. To process data. To give desired information. .....

Data is defined as the raw facts or symbols which are collected from various sources and need to be processed.Information is defined as the desired or meaning full result obtained after processing the data. .....

Since, the computer accepts raw data as input and converts into information by means of data processing, it is called information processing machine .....

Computer is an electronic data processing device capable of taking an input data, processing them and displaying the processed result at a very high speed under the control of set of instruction. The features of computer are:Speed Accuracy .....

Computers are classified into models in following ways: a. Extended (XT) model b. Advance technology (AT) model c. PS/2 (personal system2) .....

IBM computers Apple computers a. These computers use both GUI and CUI programs. a. These computers use only GUI Programs. b. Mouse is optional to these computers. b. Mouse is compulsory to these .....

IBM Personal Computers IBM compatible computers a. They are originally manufactured by IBM company USA. a. They are duplicate to IBM and manufactured by local companies with permission of IBM Company. b. .....

On the basis of brand computer are classified as: IBM Personal Computers. IBM compatible. Apple/Macintosh/Acer/LG/ Samsung etc. .....

The idea of laptop computer was originated by Alan Kay of Xerox Palo Alto Research Center in .....

Analog Digital Converter (ADC) converts the sound wave into digital signal in multimedia .....

These are small sized digital computers so they are called handheld computers. Laptop and palmtop computers are handheld .....

Small sized portable hand-held electronic device which has all the features of personal computers called Personal data assistance .....

Multimedia is a combined form of two or more media like as text, graphics, sound, animation .....

Minicomputers Microcomputers a. They are more powerful than micro computers. a. They are less powerful minicomputers. b. They are comparatively expensive. b. They are smaller in size. c. They are comparatively expensive. c. They are comparatively .....

Mainframe computers are large sized multi-user computers with fast processing, speed and high storage capacity and support thousands of users. They are mainly used in large scale multinational .....

Super computers are special purposed, powerful, most expensive and fastest computer. The application of super computers in real life situation are aircraft launching, automobile designing .....

On the basis of size and processing speed the computers are classified as:- Super computer.  Mainframe computer. Mini computer. Micro computers. .....