1. Four Categories of Output

      Text

      Graphics

      Audio

      Video

2. Characteristics of:

       LCD Monitor- ultra-slim, stylish,full color display devices for the PC that fit in any part of the home or office.

       LCD Screens- lightweight, aesthetically appealing, energy efficient and long-term cost effective. 

       Plasma Monitors- produce rich colors along with very deep blacks,wide viewing angles allow more people to be able to watch TV comfortably, pixels of Plasma TV’s are lit individually so the pixels can be completely turned off to display truck black colors. 

       HDTVs- black level, brightness, contrast, color saturation, image processing, screen composition, tuners and cable card. 

3. Basic Components

       Processor

       memory

       adapter cards

       ports

       drive bays

       power supply

       motherboard

       chip

       Central Processing Unit

       Machine Cycle      

4.Components of a processor:

       Control Unit

       Arithmetic/ Logic Unit (ALU)

       Register

5. Short for binary digit, the smallest unit of information on a machine.

When the user press any letter using the keyboard the electronic signal from that letter is sent to the system unit then the system unit convert it to its binary code and stored in memory for processing. After processing the binary code for that particular letter is converted to an image and displayed on the output device.

6.Categories of Application Software:

       Personal productivity Applications

       Multimedia and Graphics applications

       Communications applications 

       Home and Educational