- Collection of facts and figures are called
Data
- Processed data is called
Information
- A set of actions performed by the computer to convert data into information is called
Data processing
- The word ‘data’ is originated from the Latin word
Datum
- The word ‘Computer’ is originated from the Latin word
Computus
- Switching devices used in the first generation of computers
Vacuum Tubes
- Examples of the first generation of computers
UNIVAC, EDVAC, EDSAC, ENIAC
- Vacuum Tubes are invented by
John A Fleming
- Switching devices used in the Second generation of computers
Transistors
- Examples of the Second generation of computers
IBM 7000, ATLAS, NCR 304
- Transistors are invented by
William Shockley, Walter Brattain, John Bardeen
- Switching devices used in the Third generation of computers
Integrated Circuits
- Examples of the Third generation of computers
IBM 360/370, Honeywell 6000 series
- Switching devices used in Fourth generation of computers
VLSI Micro Processor
- Switching devices used in Fifth generation of computers
ULSI Microprocessor
- The technology used in Fifth generation of computers
Artificial Intelligence
- The computers which can be carried from one place to another are known as
Portable Computers
- First portable micro computer
Osborne I
- Major input devices
Keyboard, Mouse, Joystick, Scanner, Microphone, Digital Camera, Touch Screen, Optical mark reader (OMR), Barcode reader, Magnetic Ink Character Recognition (MICR)
- Major output devices
Monitor, Printer, Speaker, Plotter, Head Phone, Projector
- Which is known as a primary input device
Keyboard
- Which is known as a primary output device
Monitor
- Number of function keys on a keyboard
12
- Largest key on the keyboard
Spacebar
- The key placed at the top left corner of the keyboard
Escape Key (Esc)
- The standard which is used to convert a keystroke to its corresponding bit
ASCII
- ASCII stands for
American Standard Code for Information Interchange
- The normal number of bits in ASCII
7 bit
- No of characters in an 8 bit ASCII
256
- An 8-bit character encoding commonly used in IBM mainframe operating systems
EBCDIC (Extended Binary Coded Decimal Interchange Code)
- Pointing device used in computer
Mouse
- The mouse was invented by
Douglas Engelbert
- The unit used to represent the speed of the mouse
Mickey
- Working of a wireless mouse is based on
Infrared Rays
- The company that developed mouse
Xerox PARC
- The first mouse was marketed by
Apple
- The blinking symbol which indicates the next position of the character is called
Cursor
- The device used for moving the cursor on the screen of a computer is called
Mouse
- A small figure which depicts some applications on the screen is called
Icon
- The system used for the evaluation of competitive examinations
OMR (Optical Mark Reader)
- Numeric code represented as a series of lines
Barcode
- Input devise for reading bar codes
Barcode Reader
- Resolution of the monitor is associated with
Number of pixels on a monitor
- The smallest controllable element of a picture represented on the screen is known as
Pixel
- Pixel is the short form of
Picture element
- The capability of a sensor to observe the smallest object clearly is called
Resolution
- Image with smaller pixel will have
Higher resolution (Which need more memory)
(To be Continued…)