Punched cards were first introduced by
1). Powers
2). Pascal
3). Jacquard
4). Herman Hollerith
Different components of the motherboard of a PC unit are linked together by sets of parallel electrical conducting lines. What are these lines called?
1). Conductors
2). Buses
3). Connectors
4). Consecutive
Which of the following is not essential to shut down your computer?
1). Save all opened files
2). Close all running applications
3). Switch off monitor
4). Cut off the power supply
What is the name of the display feature that highlights are of the screen which requires operator attention?
1). Pixel
2). Reverse video
3). Touch screen
4). Cursor
In 1830 Charles Babbage designed a machine called the Analytical Engine which he showed at the Paris Exhibition. In which year was it exhibition?
1). 1820
2). 1860
3). 1855
4). 1870