Introduction To Computers

What is a Computer?

• A computer is a machine that works according to a list of instructions known as program.

• The computer to show you the desired result and information.

What is a hardware?

• These are the physical units of a computer system which you can see and touch.

• Relates to a set of programs.The software controls the computer hardwareparts and makes them operational.

ALU, CU and MU are the parts of......................

• software

• CPU

• RAM

RAM is an example of...........................memory

• primary

• secondary

• none of these

Which printer contains movable print head with pins that strike the ribbon placing a dot on the paper with hundreds of dots forming images on text?

• Inkjet Printer

• Laser Printer

• Dot Matrix Printer

Which printer forms letters and images on the paper by spraying small streams of quick-drying ink?

• Laser Printer

• Inkjet Printer

• Handheld Scanner

Which printer uses laser technology to print images on the paper?

• Laser Printer

• CPU

• Monitor

Which input device scans images from photographs, posters, magazines directly into the computer.

• Flatbed Scanner

• Scanner

• Handheld Scanner

Which output device is used for making a large paper drawing such as construction maps and engineering drawings?

• Plotter

• Printer

• Digital Camera

• Touch Screen

Which output device is used is used to display video, images or computer data on a larger screen?

• Printer

• LCD Projector

• Plotter